M
M&M
M&M's
M'Lou
M.C. ("Mother Cat")
M.C. Amadeus
M.D. ("Mad Dog")
M.E.S.L. (Meatball eyes and spagetti legs)
M.J.Tookers
Ma
Maalox
Maatjie (Afrikaans for "little friend")
Mabel
Mabey
Mac
Mac Duff
Mac the Knife
Mac-Attack
Macaroni
Macasa
Macavity
Macbeth
Macchiavelli
Macduff
MacGillikitty
MacGregor
MacGyver
Macha (Irish Goddess)
Machete
Machiavelli
Macho
Machts Nichts
Macintosh
Mack
Mackdoodles
MacKenzie
Mackerel
Mackie
Macko
Mackroll
Macky Kat
Macky-Wacky
Macleay
Macmillan
Maco
Macpherson
MacTabby
MacTavish
Macuilxochitl (Aztec mythology: the god of music and dance)
Macusa (after the first girlfriend of Compay Segundo)
Macushla (Irish for "my darling")
Macy
Mad Cat
Mad Dog
Mad Max
Mad Max the Road Warrior
Mad Maxx
Madam Boo
Madam Helena petrovich Blavatski
Madame Butterfly
Madame Cuddles
Madcap
Madcap Bad Cat
Madchen (German for "little girl")
Madden
Maddie
Maddison
Madeira
Madeleine
Madeline
Madhuri
Madibug
Madie
Madison
Madlyn
Madmax
Madoka
Madoki
Madonna
Madore
Maduro
Maebelle
Maelstrom
Maestoso (musical term meaning "with majesty")
Maestro
Maestro Tuxedo
Maeve
Mafalda
Mafia
Mafioso
Mag
Maga
Magapaws
Magda
Magdalina
Magee
Magellan
Magellian
Magenta
Maggi
Maggie
Maggie Elise
Maggie Mae
Maggie May
Maggie Moneyeyes
Maggy
Magi
Magic
Magna
Magna Catta
Magnesium Hydroxide
Magnet
Magnificat
Magnolia
Magnolia Belle
Magnolia Mayhem
Magnum
Magnum P.I.
Magnus
Magnus Barf't
Magpie
Magritte
Magruder
Mags
Magus
Magwa
Magz
Maha
Mahalia
Maharishi
Mahi-Mahi
Mahimahi
Mahkucky
Mahogany
Mahogany Mist
Mahomet
Mahoot
Mahrio
Mahu
Mai Ling
Mai Tai
Mai Tai Tu
Mai-Ling
Maia
Maicho
Maika
Mail
Mailman
Mainard
Maine
Mainerd
Mainly Marvelous
Maire
Maisie
Maitos
Maizie
Maizy
Maja
Majesta
Majestic
Majesty
Maji
Majick
Majik
Major
Major Grey
Maka
Makar
Makayla
Makena
Makenzie
Maki
Makita
Mako
Maksi
Mal Leable
Mal'vina
Malachai
Malaquias
MaLarkey
Malcolm
Malcolm James
Malcolm The Boneless
Malcolm X
Malcom
Malcom Tent
Maley
Maliboo
Maliboo Canyon
Maliboo Canyon Bear
Malibu
Malice
Malichi
Malik (Arabic for "master")
Malinki (after Lynley Dodd's childrens book "Slinky Malinki")
Malka
Malkin
Malkinor
Malkuth The Mush-Boy
Mallarde
Mallarde, Cat a la Orange
Malley
Mallorey
Mallory
Mallpark
Mallue
Mally
Mally Moe
Mallymal
Maloni
Malossi
Mam'selle
Mama
Mama Bumpity
Mama C
Mama Cat
Mama Girl
Mama Kitty
Mama's Boy
Mama's Missie
Mamacita
Mamala
Mamba
Mambo
Mamie
Mamma Cat
Mamo
Man
Man of Mystery
Man Of The Moon
Man Paws
Man Power
Manapua
Manchu
Manda
Mandal
Mandalay
Mandarijn
Mandela
Mandicat
Mandicus
Mandinga (after a traditional Cuban song)
Mandinka
Mandolin
Mandrake
Mandu (as in Cat Mandu)
Mandy
Mandy Balck
Maneca
Manefa
Manga
Mango
Mango (after the character in Saturday Night Live)
Mangos
Mangy Half-Breed
Mangykat
Manhasset (after a music stand company)
Manhattan
Maniac
Maniac Kitty-kat Pendragon
Manic Depressive
Manky
Mann
Mannaz
Manners
Mannie
Mannikavacakar
Manny
Manson
Manteau
Mantha
Manuel
Manx
Manxy
Manzer
Mao (Egyptian for "Cat")
Mao-Mao (Cantonese for "cat")
Mao-tou Pu-sa (Chinese for "the Bodhisattva Cat-face")
Mao-Tse Tung
Maotsetung
Mapes
Maple
Maple Syrup
Mara
Marabelle
Marabunta (after the Soldier ants in South America)
Maraschino
Marat
Marathon
Marauder
Marble
Marbler
Marbles
Marblet
Marbletski
Marcel
Marchello
Marcie
Marco
Marco Polo
Marcus
Marcus Welby
Marcy
Mardi Gras
Mareau
Marf
Marfa
Marfusha
Margaret (after Margaret Thatcher)
Margaret Hissyface
Margarine
Margarita
Margaritaville
Margaux
Margay
Marge
Margherita
Margie
Margin
Margo
Marguerita
Marguerite
Maria
Maria Conchita Gatopants
Mariachi
Mariah
Marianna
Marianne
Marichat
Maricho
Marie
Marie Antoinette
Marie Curie
Marie-Eve
Marieka
Marietta
Marigold
Marika
Marikatin Olga Andrejevna
Marilla
Marilou
Marilyn
Marilyn Monroe
Marin
Marina
Marinara
Mario
Mariole
Marion
Mariposa (Spanish for "butterfly")
Mariska
Marja
Marjoram
Mark
Mark Antonia
Mark I love you
Markel
Marker
Markiz
Marky-pooh Whiskers Nibble Corn
Marla
Marla Maples
Marlboro
Marlena
Marley
Marlin
Marlo
Marloe
Marlowe (after Philip)
Marmaduke
Marmalade
Marmelade
Marmie (short for Marmalade)
Marmite
Marmsyduke
Marney
Marnie
Marquee
Marrakesh
Mars
Marshall
Marshmallow
Marshmellow
Marsina
Marta
Marte
Martha
Martian
Martin
Martina
Martini
Marty
Marvelous
Marvelous Imperial Pussycat
Marvin
Mary
Mary Bagpipe Donut
Mary Catherine
Mary Katherine
Mary Magdalene
Mary-Ann
Mary-Kate Olsen
Maryellen
Marykay
Marylou
Marzipan
Marzipan (from the Flash cartoon Homestar Runner)
Mascara
Mascot
Masha
Mashka
Mashmaloo
Masia
Masik
Masika (Swahili for "born in the rain")
Maso
Mason
Masquerade
Massander (after Massandra, a little village near Yalta, Crimea, Ukraine)
Master
Master Nicholas Christian
Master Sebastian
Master Sebastian, The Bastu Of Fu Manchu
Mastro
Masya
Masza
Mata Hari
Matador
Matca (Croatian for 'female cat')
Match Maker
Matches
Mater
Mateus
Matewis
Mathilda
Matilda
Matisse
Matje (Flemish for "little mat")
Matka
Matok
Matou
Matra
Matrena
Matrix
Matrozkine
Matt
Matt Catt
Matter-of-Cat
Matthew
Mattie
Mattox
Matty
Matzo
Mau
Mauchai
Maud
Maude
Maui
Maule
Mauler
Maulie
Mauly Ringworm
Maunz
Maunz (catname in Struwwelpeter)
Maunzi
Maura
Maureen
Maurice
Maus
Mauser
Mausi
Mauve Mutz
Mauwse
Mave
Maverick
Mavis
Mavra
Max
Max a million
Max Houdini
Maxi
Maxie
Maxie Messmaker
Maxie-boo
Maxie-Moto
Maxiefaxiewaxietaxi
Maxima
Maximilian Liao Klein
Maximillian
Maximillion
Maximillion Diamond
Maximillion vonBadcat
Maximino
Maximoto
Maximum Cat
Maximus
Maximus Decimus Meridius
Maxine
Maxine MacArthur
Maxlie
Maxlin
Maxmillian
Maxwell
Maxwell P. Cat
Maxwell Silver-Hammer
Maxwell Smart
Maxx
Maxy
Maxy-P
May
May Kitty
May Thai
May-Ling
May-pole
Maya
Mayahuel (Aztec mythology: goddess of maguey)
Maybe
Maybe Baby
Maybelline
Mayfair
Mayflower
Mayhem
MayMay
Maynard
Mayor McCheese
Maysa
Mazel Tov
Mazie
Mazik
Mazo
Maжka
McCavity
McCloud
McConnell
McCoy
McDuffy
McEntire
McGraw (after the american country music singer Tim McGraw)
McGreggor
McGurk
McKenzie
McKinley
McNeil Sylvester Waller-Orth
McNutt
McNuttless
McQue
McSalter
McTavish
Me Too
Me-Too
Mea
Mea Culpa (Latin for "my fault")
Meade
Meadow
Meaghan
Mealy
Mealykaleekymacka (Christmas)
Meander
Meaness
Measles
Meat-a-licious
Meatball
Meathead
Meathook
Meatious Maximus
Meatloaf
Meatloaf (after the rock band)
Meatloaf Of Death
Meaty Boy
Meaty Feets
Meatyboy
Mebo
Medea
Medianoche
Medicine Kitty
Medicine Man
Medley
Medusa
Mee-Krob
Meecer
Meechako
Meecho
Meekins
Meeko
MeeMee
Meems
Meenie
Meep
Meepers
Meepy
Meer
MeerClar Sloane
Meesh
Meesha
Meeth
Meethie
Meetsi (German for "kitty")
Meeuw (Afrikaans for "meow")
Meeuw (Dutch for "pigeon")
Meewow
Meezee
Meg
Mega
Megabyte
MegaDeath
Megadots
Megahertz
Megan
Megan Brooke
Megatoes
Megellan
Meggie
Meggie The Bitch Kitty
Meghann
Megs
Mehitabel
Mehkt Hakkikt
Mei Ling Shan
Mei Sin
Meisha
Meisie
Meissa (after Lambda Orionis, one of the stars in the Orion constellation)
Meistoe
Meiya Harley
Mejo (Spanish for "black")
Meko
Mel
Mel Gibson
Melabie
Melan
Melange
Melanie
Melanippos
Melanistic
Melas (Biblical Greek word for black)
Melbourne
Mele
Meli (Greek for "honey")
Meliot (after Arthurian literary character "Sir Meliot de Logres")
Melissa
Melitrissa
Mello
Mellon (Means "Friend")
Mellow
Melodie
Melody
Melon
Melon-Head
Melquiades
Meluseth (she who loves the moon)
Melville
Melvin
Melvis
Mem
Meme
Memmy
Memmycat
Memnoch (after the character in Anne Rice's 'Vampire Chronicles')
Memoir
Memphis
Menage
Menchi
Mendle
Mendlesohn
Meneau
Meneki Nikko
Menelao
Mennis
Menolly Jazz
Mental
Mental Case
Meo
Meo Hao
Meouwz
Meow
Meow Meow
Meow Meow Girl
Meow Tse Tounge
Meow Tse-Tung
Meow-mee
Meowance
Meower
Meowie
Meowie Face
Meowkis
Meowmer
Meowsapuss
Meowser
Meowshroom
Meowski
Meowsta
Meowwow
Meowzabeth
Meowzer
Meowzers
Meowzie
Meph
Mephisto
Mephistopheles
Mercedes
Mercer
Mercury
Mercutio (character in Romeo and Juliet)
Mercy
Meredith
Meri Ubastet
Meri-Mehkmet (after an Egyptian queen)
Meriadoc
Meringue
Merissa
Merlan
Merle
Merlin
Merlin Mc.Cuddle Loaf
Merlino
Merlkins
Merlot
Merly
Merlyn
Merrick
Merricka
Merry
Merry Christmas
Merry Mews
Mervyn
Mery
Meryl
Meryl Peep
Mesa
Mesha
Meshak
Mesquite
Messy
Messyfase
Meta
Meta Mae
Metallica (after the rock/metal band)
Metaphor
Metaxa
Methos (an enigmatic TV show character with many cat characteristics)
Methyl
Metis
Metoo
Metric
Metricat
Metrick
Metrik
Metro
Metztli (Aztec mythology: the moon god)
Meuser
Mew
Mewbles
Mewlan
Mewler (after the Irish tenor)
Mewy
Mewymew
Meyer
Mi Nyo (Burmese for "Miss Brown")
Mi Tu
Mi-kay Seven (Japanese for "tricolor-feline-unit-seven")
Mi-Ke
Mia
Miacis (50 million year old ancestor of the cat)
Miaow-Miaow
Miasma
Miata
Miauert
Miaumoto (Japanese swordsman/strategist)
Miav (Danish for "meow")
Mic Mac
Mica Pisika (Romanian for "little cat")
Micaela
Micah
Micari
Mice Master
Micester
Michael
Michael Jordan
Michael Patrick O'Kittycat
Michael Thomas
Michaela
Michaelangelo
Michant
Micheal
Michel
Michelangelo
Michelin
Michelle
Michi
Michief
Michine (Mi-cheen)
Michkin
Micia
Micio
Mick
Mick Jagger
Mick St. Charles
Mickey
Mickey And Minnie
Mickey Blue
Mickey Mouser
Micki
Mickin
Mico
Mico (Spanish for "little monkey")
Micro
Microbes
Mictlan (Aztec mythology: the underworld)
Mictlantecuhtli (Aztec mythology: the god of Mictlan and the dead)
Midas
MiddieMeow
Middles
Midge
Midget
Midi
Midnight
Midnight Amber Foxy Kamber
Midnight Blue
Midnight Mariah (from the song "They Call The Wind Mariah")
Midnight Rider (after the song by the Allman Brothers Band)
Midnight Shadow
Midnight Smedley
Midnight Special
Midnite
Midori
Midrange
Mie
Mie Mie (pronounced "My My)
Mie moe moe
Mieko
Miele
Miemur
Mies
Miescat
Mieschen
Miette
Miezer
Miffer
MiG
Mighty
Mighty Hunter
Mighty Mouth
Mighty Thor
Mignon
Miguel
Miika (after the finnish football player Miika Koppinen)
Mija (Spanisch for "little girl")
Mika
Mikail
Mikaso
Mike
Mike Hammer
Mike Malone
Mike Malone Of Suzeran
Mike P. Hoover
Mikey
Mikey Jordan
Mikhail
Miki
Mikie
Mikkar
Mikkel
Mikkelbar Nelson (after the character on the Bob and Ray Radio show)
Mikki
Mikko
Miklo
Miko
Mila
Milady
Milagros (Spanish for "miracles")
Milano
Mildew
Mile High
Milea
Milennium
Miles
Miles (of smiles)
Milhouse
Milk
Milk Misty
Milk Monster
Milkdud
Milkshake
Milky
Milky Way
Milkybooboo
Milla
Milla-Magia
Mille
Miller
Milli
Milli Vanilli
Millicent
Millicent (after the character in D.C. Simpson's online comic "Ozy and Millie")
Millie
Millie T. Cat
Millwood
Milly
Milly and Millford
Milly Molly Mandy
Milmil
Milo
Miloe
Milou
Milton
Mima
Mimas Maxamillian
Mime
Mimi
Mimi - Ow!
Mimine
Mimmi
Mimo
Mimosa
Mimsy
Min
Min-min
Mina
Mincer (catname in Struwwelpeter)
Mindinao
Mindy
Mindy Rae
Mine
Mineau
Minerva (after the Roman goddess of the hunt)
Minet
Minette
Ming
Ming Foo
Ming Li
Ming Ming the Circus Monkey
Ming Sue
Ming-Ling
Minga
Mingo
Mingus
Mini
Mini Gray
Mini Me
Mini Min
Mini Panther
Mini Pearl
Minica
Minie
Minilotto
Minime
Minimog
Minimum
Minimum-cat
Minipuss
Minis
Mink
Minka
Minkatze
Minke
Minki Man
Minkin
Minko
Minky
Minky Sue
Minneapolis
Minneapurrlis
Minnerva
Minnesota
Minni
Minnie
Minnie Mitchell
Minnie Moo
Minnie Moo Lazy
Minnie Mouse
Minnie Pearl
Minnow
Minny
Mino (French for "Puss")
Minoe
Minoes
Minon (from the poem "Prince Dorus" by Charles Lamb, 1811)
Minoosh
Minor
Minou
Minou Noir
Minouche
M&M's
M'Lou
M.C. ("Mother Cat")
M.C. Amadeus
M.D. ("Mad Dog")
M.E.S.L. (Meatball eyes and spagetti legs)
M.J.Tookers
Ma
Maalox
Maatjie (Afrikaans for "little friend")
Mabel
Mabey
Mac
Mac Duff
Mac the Knife
Mac-Attack
Macaroni
Macasa
Macavity
Macbeth
Macchiavelli
Macduff
MacGillikitty
MacGregor
MacGyver
Macha (Irish Goddess)
Machete
Machiavelli
Macho
Machts Nichts
Macintosh
Mack
Mackdoodles
MacKenzie
Mackerel
Mackie
Macko
Mackroll
Macky Kat
Macky-Wacky
Macleay
Macmillan
Maco
Macpherson
MacTabby
MacTavish
Macuilxochitl (Aztec mythology: the god of music and dance)
Macusa (after the first girlfriend of Compay Segundo)
Macushla (Irish for "my darling")
Macy
Mad Cat
Mad Dog
Mad Max
Mad Max the Road Warrior
Mad Maxx
Madam Boo
Madam Helena petrovich Blavatski
Madame Butterfly
Madame Cuddles
Madcap
Madcap Bad Cat
Madchen (German for "little girl")
Madden
Maddie
Maddison
Madeira
Madeleine
Madeline
Madhuri
Madibug
Madie
Madison
Madlyn
Madmax
Madoka
Madoki
Madonna
Madore
Maduro
Maebelle
Maelstrom
Maestoso (musical term meaning "with majesty")
Maestro
Maestro Tuxedo
Maeve
Mafalda
Mafia
Mafioso
Mag
Maga
Magapaws
Magda
Magdalina
Magee
Magellan
Magellian
Magenta
Maggi
Maggie
Maggie Elise
Maggie Mae
Maggie May
Maggie Moneyeyes
Maggy
Magi
Magic
Magna
Magna Catta
Magnesium Hydroxide
Magnet
Magnificat
Magnolia
Magnolia Belle
Magnolia Mayhem
Magnum
Magnum P.I.
Magnus
Magnus Barf't
Magpie
Magritte
Magruder
Mags
Magus
Magwa
Magz
Maha
Mahalia
Maharishi
Mahi-Mahi
Mahimahi
Mahkucky
Mahogany
Mahogany Mist
Mahomet
Mahoot
Mahrio
Mahu
Mai Ling
Mai Tai
Mai Tai Tu
Mai-Ling
Maia
Maicho
Maika
Mailman
Mainard
Maine
Mainerd
Mainly Marvelous
Maire
Maisie
Maitos
Maizie
Maizy
Maja
Majesta
Majestic
Majesty
Maji
Majick
Majik
Major
Major Grey
Maka
Makar
Makayla
Makena
Makenzie
Maki
Makita
Mako
Maksi
Mal Leable
Mal'vina
Malachai
Malaquias
MaLarkey
Malcolm
Malcolm James
Malcolm The Boneless
Malcolm X
Malcom
Malcom Tent
Maley
Maliboo
Maliboo Canyon
Maliboo Canyon Bear
Malibu
Malice
Malichi
Malik (Arabic for "master")
Malinki (after Lynley Dodd's childrens book "Slinky Malinki")
Malka
Malkin
Malkinor
Malkuth The Mush-Boy
Mallarde
Mallarde, Cat a la Orange
Malley
Mallorey
Mallory
Mallpark
Mallue
Mally
Mally Moe
Mallymal
Maloni
Malossi
Mam'selle
Mama
Mama Bumpity
Mama C
Mama Cat
Mama Girl
Mama Kitty
Mama's Boy
Mama's Missie
Mamacita
Mamala
Mamba
Mambo
Mamie
Mamma Cat
Mamo
Man
Man of Mystery
Man Of The Moon
Man Paws
Man Power
Manapua
Manchu
Manda
Mandal
Mandalay
Mandarijn
Mandela
Mandicat
Mandicus
Mandinga (after a traditional Cuban song)
Mandinka
Mandolin
Mandrake
Mandu (as in Cat Mandu)
Mandy
Mandy Balck
Maneca
Manefa
Manga
Mango
Mango (after the character in Saturday Night Live)
Mangos
Mangy Half-Breed
Mangykat
Manhasset (after a music stand company)
Manhattan
Maniac
Maniac Kitty-kat Pendragon
Manic Depressive
Manky
Mann
Mannaz
Manners
Mannie
Mannikavacakar
Manny
Manson
Manteau
Mantha
Manuel
Manx
Manxy
Manzer
Mao (Egyptian for "Cat")
Mao-Mao (Cantonese for "cat")
Mao-tou Pu-sa (Chinese for "the Bodhisattva Cat-face")
Mao-Tse Tung
Maotsetung
Mapes
Maple
Maple Syrup
Mara
Marabelle
Marabunta (after the Soldier ants in South America)
Maraschino
Marat
Marathon
Marauder
Marble
Marbler
Marbles
Marblet
Marbletski
Marcel
Marchello
Marcie
Marco
Marco Polo
Marcus
Marcus Welby
Marcy
Mardi Gras
Mareau
Marf
Marfa
Marfusha
Margaret (after Margaret Thatcher)
Margaret Hissyface
Margarine
Margarita
Margaritaville
Margaux
Margay
Marge
Margherita
Margie
Margin
Margo
Marguerita
Marguerite
Maria
Maria Conchita Gatopants
Mariachi
Mariah
Marianna
Marianne
Marichat
Maricho
Marie
Marie Antoinette
Marie Curie
Marie-Eve
Marieka
Marietta
Marigold
Marika
Marikatin Olga Andrejevna
Marilla
Marilou
Marilyn
Marilyn Monroe
Marin
Marina
Marinara
Mario
Mariole
Marion
Mariposa (Spanish for "butterfly")
Mariska
Marja
Marjoram
Mark
Mark Antonia
Mark I love you
Markel
Marker
Markiz
Marky-pooh Whiskers Nibble Corn
Marla
Marla Maples
Marlboro
Marlena
Marley
Marlin
Marlo
Marloe
Marlowe (after Philip)
Marmaduke
Marmalade
Marmelade
Marmie (short for Marmalade)
Marmite
Marmsyduke
Marney
Marnie
Marquee
Marrakesh
Mars
Marshall
Marshmallow
Marshmellow
Marsina
Marta
Marte
Martha
Martian
Martin
Martina
Martini
Marty
Marvelous
Marvelous Imperial Pussycat
Marvin
Mary
Mary Bagpipe Donut
Mary Catherine
Mary Katherine
Mary Magdalene
Mary-Ann
Mary-Kate Olsen
Maryellen
Marykay
Marylou
Marzipan
Marzipan (from the Flash cartoon Homestar Runner)
Mascara
Mascot
Masha
Mashka
Mashmaloo
Masia
Masik
Masika (Swahili for "born in the rain")
Maso
Mason
Masquerade
Massander (after Massandra, a little village near Yalta, Crimea, Ukraine)
Master
Master Nicholas Christian
Master Sebastian
Master Sebastian, The Bastu Of Fu Manchu
Mastro
Masya
Masza
Mata Hari
Matador
Matca (Croatian for 'female cat')
Match Maker
Matches
Mater
Mateus
Matewis
Mathilda
Matilda
Matisse
Matje (Flemish for "little mat")
Matka
Matok
Matou
Matra
Matrena
Matrix
Matrozkine
Matt
Matt Catt
Matter-of-Cat
Matthew
Mattie
Mattox
Matty
Matzo
Mau
Mauchai
Maud
Maude
Maui
Maule
Mauler
Maulie
Mauly Ringworm
Maunz
Maunz (catname in Struwwelpeter)
Maunzi
Maura
Maureen
Maurice
Maus
Mauser
Mausi
Mauve Mutz
Mauwse
Mave
Maverick
Mavis
Mavra
Max
Max a million
Max Houdini
Maxi
Maxie
Maxie Messmaker
Maxie-boo
Maxie-Moto
Maxiefaxiewaxietaxi
Maxima
Maximilian Liao Klein
Maximillian
Maximillion
Maximillion Diamond
Maximillion vonBadcat
Maximino
Maximoto
Maximum Cat
Maximus
Maximus Decimus Meridius
Maxine
Maxine MacArthur
Maxlie
Maxlin
Maxmillian
Maxwell
Maxwell P. Cat
Maxwell Silver-Hammer
Maxwell Smart
Maxx
Maxy
Maxy-P
May
May Kitty
May Thai
May-Ling
May-pole
Maya
Mayahuel (Aztec mythology: goddess of maguey)
Maybe
Maybe Baby
Maybelline
Mayfair
Mayflower
Mayhem
MayMay
Maynard
Mayor McCheese
Maysa
Mazel Tov
Mazie
Mazik
Mazo
Maжka
McCavity
McCloud
McConnell
McCoy
McDuffy
McEntire
McGraw (after the american country music singer Tim McGraw)
McGreggor
McGurk
McKenzie
McKinley
McNeil Sylvester Waller-Orth
McNutt
McNuttless
McQue
McSalter
McTavish
Me Too
Me-Too
Mea
Mea Culpa (Latin for "my fault")
Meade
Meadow
Meaghan
Mealy
Mealykaleekymacka (Christmas)
Meander
Meaness
Measles
Meat-a-licious
Meatball
Meathead
Meathook
Meatious Maximus
Meatloaf
Meatloaf (after the rock band)
Meatloaf Of Death
Meaty Boy
Meaty Feets
Meatyboy
Mebo
Medea
Medianoche
Medicine Kitty
Medicine Man
Medley
Medusa
Mee-Krob
Meecer
Meechako
Meecho
Meekins
Meeko
MeeMee
Meems
Meenie
Meep
Meepers
Meepy
Meer
MeerClar Sloane
Meesh
Meesha
Meeth
Meethie
Meetsi (German for "kitty")
Meeuw (Afrikaans for "meow")
Meeuw (Dutch for "pigeon")
Meewow
Meezee
Meg
Mega
Megabyte
MegaDeath
Megadots
Megahertz
Megan
Megan Brooke
Megatoes
Megellan
Meggie
Meggie The Bitch Kitty
Meghann
Megs
Mehitabel
Mehkt Hakkikt
Mei Ling Shan
Mei Sin
Meisha
Meisie
Meissa (after Lambda Orionis, one of the stars in the Orion constellation)
Meistoe
Meiya Harley
Mejo (Spanish for "black")
Meko
Mel
Mel Gibson
Melabie
Melan
Melange
Melanie
Melanippos
Melanistic
Melas (Biblical Greek word for black)
Melbourne
Mele
Meli (Greek for "honey")
Meliot (after Arthurian literary character "Sir Meliot de Logres")
Melissa
Melitrissa
Mello
Mellon (Means "Friend")
Mellow
Melodie
Melody
Melon
Melon-Head
Melquiades
Meluseth (she who loves the moon)
Melville
Melvin
Melvis
Mem
Meme
Memmy
Memmycat
Memnoch (after the character in Anne Rice's 'Vampire Chronicles')
Memoir
Memphis
Menage
Menchi
Mendle
Mendlesohn
Meneau
Meneki Nikko
Menelao
Mennis
Menolly Jazz
Mental
Mental Case
Meo
Meo Hao
Meouwz
Meow
Meow Meow
Meow Meow Girl
Meow Tse Tounge
Meow Tse-Tung
Meow-mee
Meowance
Meower
Meowie
Meowie Face
Meowkis
Meowmer
Meowsapuss
Meowser
Meowshroom
Meowski
Meowsta
Meowwow
Meowzabeth
Meowzer
Meowzers
Meowzie
Meph
Mephisto
Mephistopheles
Mercedes
Mercer
Mercury
Mercutio (character in Romeo and Juliet)
Mercy
Meredith
Meri Ubastet
Meri-Mehkmet (after an Egyptian queen)
Meriadoc
Meringue
Merissa
Merlan
Merle
Merlin
Merlin Mc.Cuddle Loaf
Merlino
Merlkins
Merlot
Merly
Merlyn
Merrick
Merricka
Merry
Merry Christmas
Merry Mews
Mervyn
Mery
Meryl
Meryl Peep
Mesa
Mesha
Meshak
Mesquite
Messy
Messyfase
Meta
Meta Mae
Metallica (after the rock/metal band)
Metaphor
Metaxa
Methos (an enigmatic TV show character with many cat characteristics)
Methyl
Metis
Metoo
Metric
Metricat
Metrick
Metrik
Metro
Metztli (Aztec mythology: the moon god)
Meuser
Mew
Mewbles
Mewlan
Mewler (after the Irish tenor)
Mewy
Mewymew
Meyer
Mi Nyo (Burmese for "Miss Brown")
Mi Tu
Mi-kay Seven (Japanese for "tricolor-feline-unit-seven")
Mi-Ke
Mia
Miacis (50 million year old ancestor of the cat)
Miaow-Miaow
Miasma
Miata
Miauert
Miaumoto (Japanese swordsman/strategist)
Miav (Danish for "meow")
Mic Mac
Mica Pisika (Romanian for "little cat")
Micaela
Micah
Micari
Mice Master
Micester
Michael
Michael Jordan
Michael Patrick O'Kittycat
Michael Thomas
Michaela
Michaelangelo
Michant
Micheal
Michel
Michelangelo
Michelin
Michelle
Michi
Michief
Michine (Mi-cheen)
Michkin
Micia
Micio
Mick
Mick Jagger
Mick St. Charles
Mickey
Mickey And Minnie
Mickey Blue
Mickey Mouser
Micki
Mickin
Mico
Mico (Spanish for "little monkey")
Micro
Microbes
Mictlan (Aztec mythology: the underworld)
Mictlantecuhtli (Aztec mythology: the god of Mictlan and the dead)
Midas
MiddieMeow
Middles
Midge
Midget
Midi
Midnight
Midnight Amber Foxy Kamber
Midnight Blue
Midnight Mariah (from the song "They Call The Wind Mariah")
Midnight Rider (after the song by the Allman Brothers Band)
Midnight Shadow
Midnight Smedley
Midnight Special
Midnite
Midori
Midrange
Mie
Mie Mie (pronounced "My My)
Mie moe moe
Mieko
Miele
Miemur
Mies
Miescat
Mieschen
Miette
Miezer
Miffer
MiG
Mighty
Mighty Hunter
Mighty Mouth
Mighty Thor
Mignon
Miguel
Miika (after the finnish football player Miika Koppinen)
Mija (Spanisch for "little girl")
Mika
Mikail
Mikaso
Mike
Mike Hammer
Mike Malone
Mike Malone Of Suzeran
Mike P. Hoover
Mikey
Mikey Jordan
Mikhail
Miki
Mikie
Mikkar
Mikkel
Mikkelbar Nelson (after the character on the Bob and Ray Radio show)
Mikki
Mikko
Miklo
Miko
Mila
Milady
Milagros (Spanish for "miracles")
Milano
Mildew
Mile High
Milea
Milennium
Miles
Miles (of smiles)
Milhouse
Milk
Milk Misty
Milk Monster
Milkdud
Milkshake
Milky
Milky Way
Milkybooboo
Milla
Milla-Magia
Mille
Miller
Milli
Milli Vanilli
Millicent
Millicent (after the character in D.C. Simpson's online comic "Ozy and Millie")
Millie
Millie T. Cat
Millwood
Milly
Milly and Millford
Milly Molly Mandy
Milmil
Milo
Miloe
Milou
Milton
Mima
Mimas Maxamillian
Mime
Mimi
Mimi - Ow!
Mimine
Mimmi
Mimo
Mimosa
Mimsy
Min
Min-min
Mina
Mincer (catname in Struwwelpeter)
Mindinao
Mindy
Mindy Rae
Mine
Mineau
Minerva (after the Roman goddess of the hunt)
Minet
Minette
Ming
Ming Foo
Ming Li
Ming Ming the Circus Monkey
Ming Sue
Ming-Ling
Minga
Mingo
Mingus
Mini
Mini Gray
Mini Me
Mini Min
Mini Panther
Mini Pearl
Minica
Minie
Minilotto
Minime
Minimog
Minimum
Minimum-cat
Minipuss
Minis
Mink
Minka
Minkatze
Minke
Minki Man
Minkin
Minko
Minky
Minky Sue
Minneapolis
Minneapurrlis
Minnerva
Minnesota
Minni
Minnie
Minnie Mitchell
Minnie Moo
Minnie Moo Lazy
Minnie Mouse
Minnie Pearl
Minnow
Minny
Mino (French for "Puss")
Minoe
Minoes
Minon (from the poem "Prince Dorus" by Charles Lamb, 1811)
Minoosh
Minor
Minou
Minou Noir
Minouche
Minow
Minsky
Minster
Minstrel
Mint (after the herb)
Mintaka
Mintie
Mintnight
Minue
Minuet
Minuette
Minuish
Minute Maid
MinWee
Minx
Minyen
Minz (catname in Struwwelpeter)
Mip
Mira
Mirabell
Miracle
Miracle Cat
Mirage
Miranda
Miranda Mabel
Mirci
Mircli
Miri
Miriam
Miribu
Mirka
Mirru
Mirу
Misantrop
Mischa
Mischevious
Mischief
Mise
Misery
Misfit
Mish
Mish Mosh
Misha
Mishimi
Mishka
Mishka (Russian for "little bear")
Mishmash
Mishnoodle
Mishra
Mishy
Misk
Miso
Misquita
Miss Abigail Buttonwood
Miss Adventure
Miss Angelica Pureheart
Miss Ashley
Miss Buffy
Miss Chief (Mischief)
Miss Cleo
Miss E.
Miss Ee
Miss Gabby
Miss Jessicat
Miss Kaya
Miss Kitty
Miss Lily
Miss Limpfooty
Miss Lucy
Miss Maple
Miss Marple
Miss Meow
Miss Modest
Miss Molly
Miss Moonstone
Miss Muffett
Miss Muffin
Miss Nellie Smellie Yellow-bellie
Miss Paws
Miss Penny
Miss Piggy
Miss Pittypat
Miss Pretty Princess Abigail Smooch Face
Miss Priss
Miss Prissy
Miss Purrrfect
Miss Puss
Miss Rae
Miss Relaxation
Miss Sarah
Miss Sarah Vaughan
Miss Strangelove
Miss T. Bell
Miss Tizz
Miss Wiggles
Miss-Queue
Missan
Misser (Danish for kitty)
Missie
Missing Link
Missle
Misst
Missy
Missy Kitty
Missy Tardee
Missycat
Mist
Mistee
Mister
Mister Brother
Mister Demonico
Mister Fuzzy Rubberlips
Mister MaGoo
Mister Mister
Mister Patootie Head
Mister Perkins
Mister Puddycat
Mister Something erother
Mister Thumbs
Misti
Mistiblue Mischief
Mistifur Mountain Kitty Kat
Mistifur Mountain Meadow Muffin
Mistique
Mistletoe
Mistoffeles
Mistress
Mistress Buffington
Mistress Of Fridge
Mistress Quickly
Misty
Mit Bo
Mit-tee
Mitaine
Mitch
Mitchell
Mithcah
Mithra
Mithra Cat
Mithra Louise
Mithril
Mitja
Mitka
Mitnal (Maya mythology: the underworld hell)
Mito
Mitou
Mitsi
Mitsou
Mitsy
Mitten
Mittens
Mitts
Mitz
Mitza
Mitzarena
Mitzi
Mitzmog
Mitzvah
Mitzy
Mitzy Mew
Mix
Mixed Up
Miz Lucy
Miz Piggy
Mizzy
Mlle Butterfly
Mme Hochi Min
Mo
Mo Cuirdh (Gaelic for "beloved")
Mo Vaugh
Mo-fo
Mo-i-Rana
Mo-Jo
Mo-Mo
Mobius (after the mathematician)
Moby
Mocha
Mocha AKA PussyBoots
Mocha Manx
Mocha Mix
Mochi
Mocka
Moco
Mod
Modem
Modena
Modest
Moe
Moe Ellen Jeanmarie
Moe Moe
Moe-Monster
Moet
Moffitt
Mog
Mogadishu
Mogadon
Mogadonna
Mogget (after the character in the fantasy novels by Garth Nix)
Moggie
Moglet
Mogra
Mogsie
Mogul
Mogwai
Mogwyre
Mohave
Mohawk
Mohican
Mohrle
Moira
Moira Coon
Mojave
Moji
Mojo
Mojosito
Mojothunder
Moka
Mokey
Moki
Mokie
Mokin
Moku
Mold
Mole
Moll Flanders
Molley
Molley Muppett
Molli
Mollicoddle
Mollie
Molly
Molly Lou
Molly May Marie
Molly McButter
Molly Meganne Noelle
Molly Molla
Molly Silverpaws
Molly Sue
Mollye
Molson Moo Cat
Mom
Mom Kitty
Mom-Cat
Moma Puss
Momcat
Momma
Momma Cat
Momma Mutz
Mommy Kitty
Mommy-Kiddy
Mommycat
Momo (gangster from the movie "Get Shorty")
Momotaro
Mon Ami
Mon Cher Or Ma Cherie
Mona
Mona Lisa
Mondavi (from the californian winery)
Monday
Monet
Money
Money Honey
Monger
Mongo
Mongo (after a character in the movie Blazing Saddles)
Mongoose
Monica
Monica Kat
Monica Lewensky
Monika
Monique
Monk
Monkey
Monkey Face
Monkeybutt
Mono
Monochrome
Monroe
Monsanto
Monsieur
Monster
Monster Kitty
Monstrance
Montague
Montana
Monte
Monte Carlo
Montego
Monteque
Montezuma (after the Aztec god-king)
Montgomery
Montgomery Clift
Monther
Monty
Monty Python
Moo
Moo Moo Cat
Moo Moo Cow
Moo Shu
Moo-Moo
Mooby
Mooch
Moocher
Moochka
Moochmeister
Moochy
Moody
Moody Blue
Mooer
Moofik
Moofy
Mooggie
Moogie
Mookey Bear
Mookie
Mookie-Pookie
Mookitty
Moolie-moos
Moomoo
Moon
Moon Light
Moon Maiden
Moon Pie
Moon Unit
Moona
Moonbeam
Moonbean Or Moonmist
Mooncat
Moonchaser
Mooncritter
Moondance
Moondust
Moonflower
Moongoddess
Moonie (after the late drummer/hotel-room-wrecker Keith Moon)
Moonlight
Moonraker
Moonshadow
Moonshine
Moonstone Molly
Moonstruck
Moonunit
Moorea (island in Tahiti)
Moose
Mopar
Moped
Mopet
Mophead
Mophy
Moppet
Moppie Sloef
Mopsy
Moptop
Moqui
Morag
Morcheeba
Mordacious
Mordecai
Mordicai
Mordillo
Mordred
Morey
Morgaine
Morgan
Morgan Fairkitty
Morgan LeFey
Morgana
Morgen
Mori
Moriah
Moriarity
Moritz
Mork
Mork And Mindy
Morley
Morning Glory
Morning Star
Morocco
Morpheus
Morris
Morris Lynn
Morris Minor
Morrisey
Morrison
Morriz
Morse (after Inspector Morse)
Morsel
Mort
Mortcake
Morticia (Addams family)
Morticia Morena
Mortimer
Mortimore B. Zuckkerman
Mortina
Mortisha
Morton
Morty
Mosa
Mosby
Mose
Moselle
Moses
Mosey
Moshe
Moshto
Mosi (Navajo for "cat")
Mosis
Most
Most Handsome
Mother
Mother Lode
Mother Teresa
Motley
Motley Crue
Motley Tue
Moto
Motor
Motor Boat
Motor Man
Motor Unit
Motorino
Mottebal
Mouauia ibn Abihi (Arabic for "wailing bitch bastard")
Moufette
Mough
Mountainlion
Mouse
Mouse Doggie
Mouse McNasty
Mousekewitz
Mouseman
Mouser
Mouser Pounce-Fast
Mouseripper
Mousetrap
Mousie
Moussaka
Mousse
Moussette
Moussine
Moustache
Moustic
Moustick
Mousy
Mouth
Mouton
Movado
Movie Star
Movie Star Cat
Mow
Mow Mow
Mowcha
Mowgli
Mowp
Mowpurrs
Mowse
Moxi
Moxie
Moxie Muffin
Moxy
Moya
Moyshi
Mozart
Mozez
Mozie
Mozzerella
Mr Biggelsworth
Mr Bruce
Mr Monster
Mr. "B" ("Mr. Bastard")
Mr. A. Gray
Mr. Alfred
Mr. Anderson
Mr. Apricot
Mr. Bean
Mr. Beans
Mr. Beast
Mr. Bentley
Mr. Big
Mr. Big Stuff
Mr. Biggles Worth
Mr. Bigglesworth
Mr. Bill
Mr. Blue
Mr. Bojangles
Mr. Bonkers (from "That 70's Show")
Mr. Boots
Mr. Bowles
Mr. Brown
Mr. Bubbles
Mr. Bunny
Mr. C
Mr. Cat
Mr. Chips
Mr. Choo
Mr. Clovis Grimm
Mr. Cold Paws
Mr. Cotton
Mr. Dainty Paws
Mr. Dogfood
Mr. Fatcat
Mr. Fi Fi
Mr. Fish
Mr. Flatley
Mr. Fluff
Mr. Fur
Mr. Furrbody
Mr. Fuzz Butt
Mr. Fuzzy Nose and Toes
Mr. Fuzzybuns
Mr. Gingipuss
Mr. Goober
Mr. Goodkitty
Mr. Gotti
Mr. Hahn (after Joe Hahn, from the band Linkin Park)
Mr. Happy
Mr. Hudson
Mr. Jade
Mr. Jenkins
Mr. Jones
Mr. K
Mr. Katt
Mr. Kitty
Mr. Kitty to You
Mr. Krabbs
Mr. Krinkle
Mr. LittleHead
Mr. Lucky
Mr. Lucy
Mr. Lurch
Mr. M.
Mr. Macgeezer
Mr. Magoo
Mr. Magoo.
Mr. McFluffer
Mr. Mealy
Mr. Men
Mr. Mir
Mr. Mister
Mr. Mistoffolees
Mr. Moe
Mr. Mouse
Mr. Moustache (after the song by Nirvana)
Mr. Neo
Mr. Newman (after Victor Newman from The Young and the Restless)
Mr. Nibblesworth
Mr. O'Mally
Mr. Peepers
Mr. Pi
Mr. Pickles
Mr. PoPo
Mr. President
Mr. Puddy
Mr. Purrbody
Mr. Purrfect
Mr. Pussy
Mr. Roosevelt
Mr. Sandman
Mr. Scarfies
Mr. Sleepers
Mr. Sleepy
Mr. Snickers
Mr. Snuggle Bum
Mr. Sonny L. Burke (L. for "louse")
Mr. Sox
Mr. Spaz
Mr. Taz Man
Mr. Tibbs
Mr. Tickle Bum
Mr. Tilly
Mr. Tinkles
Mr. Topplemeyer
Mr. Tubbsaflubbs
Mr. Uhtman
Mr. Underfoot
Mr. Whiskers
Mr. Winkie
Mr. Winston (Winnie)
Mr. Wiskers
Mr. Woo
Mr. Wooten
Mr.Cuddly Buns
Mrackbudha
Mracks-A-Lot
Mri'Fa
Mrrow
Mrrranda
Mrs. Naugatuck
Mrs. Noris (after Filch's cat in the Harry Potter books)
Mrs. Peel (after the character in the tv-series "The Avengers")
Mrs. Silverspoon
Mrs. Tabitha Twitchet (from "The Tale of Tom Kitten" by Beatrix Potter)
mrs. Twinklebottoms
Ms. Agnes Depesto
Ms. Beach
Ms. Beasley
Ms. Bigglesworth
Ms. Cat
Ms. Cornwallis
Ms. Dikky
Ms. Grey
Ms. Kitty
Ms. Lester
Ms. Meowkins
Ms. Morgan
Ms. Piggy
Ms. President
Ms. Rascalini
Ms. Sassy Cat
Ms. Scott
Ms. Sweet
Ms. Terry
Ms. Woogies
Mu
Mu Shu
Muca (Gypsy for "cat")
Muchpurr
Muckl
Mucus
Mud
Mud duck
Mud Pie
Mud Puddle
Mudd
Muddles
Mudgie
Mudpie
Mudslide
Muenster
Mufasa (from The Lion King)
Mufasa (from the movie The Lion King)
Muff
Muffassa
Muffet
Muffi
Muffie
Muffie (from the Battle Star Glactica tv series)
Muffie-Roo
Muffin
Muffin Man
Muffin Muffin
Muffin-head
Muffinhead
Muffinman
Muffins
Muffinster
Muffioso
Muffster
Muffy
Mufti
Mug
Mugabe
Mugatu (after the character in the movie "Zoolander")
Mugger
Muggle Bear
Muggsy
Mugin
Mugsy
Mugwump
Muha
Muhammad Ali
Muira
Muk
Mulberry
Mulder
Muldoon
Mulle
Mullet
Mumbles (after the castle in Wales)
Mumford
Mumma
Mummies Little Angel Pie
Mummu Kitty
Mumsy
Muncher
Munchie
Munchkin
Munchy
Munchykin
Mundo
Mungo
Mungojerrie
Munk
Munku
Munkustrap
Munster
Muon
Mupee
Muppet
Mupps
Murcielago (Lamborghini)
Murderdoll Mayhem (after the band Murderdolls)
Murdock
Murfee
Murfy
Muriel
Murka
Murph
Murphy
Murphy Brown
Murray
Murrimann
Murzik
Muscatelli
Musch
Muscrat
Muse
Muselix
Musetta
Mushi
Mushka
Mushroom
Mushy
Muska
Muskustrap
Musli
Mustang
Mustard
Mutant
Mutiny
Mutt
Mutt the Bald
Mutza
Mutzy
Muu-Muu
MVP
My Girl
My Lady Sam
My Little Cat
My Little Girl
My Little Girl Girl
My Little One
My Little Pumpkin
My love
My Meow-Meow
Mya
Mycroft (named for Sherlock Holmes "smarter" brother)
Myer
Mykah
Myki
Mykonos
Myles
Mylette
Mymlan
Myna
Mynta
Mynx Poo-gas Pendragon
Myra
Myron Henry Miracle
Myrtle
Mysha
Mysin
Myska
Mystaya
Mystery
Mystery Girl
Mysti
Mystic
Mystina
Mystique
Myth
Mytsz
Minsky
Minster
Minstrel
Mint (after the herb)
Mintaka
Mintie
Mintnight
Minue
Minuet
Minuette
Minuish
Minute Maid
MinWee
Minx
Minyen
Minz (catname in Struwwelpeter)
Mip
Mira
Mirabell
Miracle
Miracle Cat
Mirage
Miranda
Miranda Mabel
Mirci
Mircli
Miri
Miriam
Miribu
Mirka
Mirru
Mirу
Misantrop
Mischa
Mischevious
Mischief
Mise
Misery
Misfit
Mish
Mish Mosh
Misha
Mishimi
Mishka
Mishka (Russian for "little bear")
Mishmash
Mishnoodle
Mishra
Mishy
Misk
Miso
Misquita
Miss Abigail Buttonwood
Miss Adventure
Miss Angelica Pureheart
Miss Ashley
Miss Buffy
Miss Chief (Mischief)
Miss Cleo
Miss E.
Miss Ee
Miss Gabby
Miss Jessicat
Miss Kaya
Miss Kitty
Miss Lily
Miss Limpfooty
Miss Lucy
Miss Maple
Miss Marple
Miss Meow
Miss Modest
Miss Molly
Miss Moonstone
Miss Muffett
Miss Muffin
Miss Nellie Smellie Yellow-bellie
Miss Paws
Miss Penny
Miss Piggy
Miss Pittypat
Miss Pretty Princess Abigail Smooch Face
Miss Priss
Miss Prissy
Miss Purrrfect
Miss Puss
Miss Rae
Miss Relaxation
Miss Sarah
Miss Sarah Vaughan
Miss Strangelove
Miss T. Bell
Miss Tizz
Miss Wiggles
Miss-Queue
Missan
Misser (Danish for kitty)
Missie
Missing Link
Missle
Misst
Missy
Missy Kitty
Missy Tardee
Missycat
Mist
Mistee
Mister
Mister Brother
Mister Demonico
Mister Fuzzy Rubberlips
Mister MaGoo
Mister Mister
Mister Patootie Head
Mister Perkins
Mister Puddycat
Mister Something erother
Mister Thumbs
Misti
Mistiblue Mischief
Mistifur Mountain Kitty Kat
Mistifur Mountain Meadow Muffin
Mistique
Mistletoe
Mistoffeles
Mistress
Mistress Buffington
Mistress Of Fridge
Mistress Quickly
Misty
Mit Bo
Mit-tee
Mitaine
Mitch
Mitchell
Mithcah
Mithra
Mithra Cat
Mithra Louise
Mithril
Mitja
Mitka
Mitnal (Maya mythology: the underworld hell)
Mito
Mitou
Mitsi
Mitsou
Mitsy
Mitten
Mittens
Mitts
Mitz
Mitza
Mitzarena
Mitzi
Mitzmog
Mitzvah
Mitzy
Mitzy Mew
Mix
Mixed Up
Miz Lucy
Miz Piggy
Mizzy
Mlle Butterfly
Mme Hochi Min
Mo
Mo Cuirdh (Gaelic for "beloved")
Mo Vaugh
Mo-fo
Mo-i-Rana
Mo-Jo
Mo-Mo
Mobius (after the mathematician)
Moby
Mocha
Mocha AKA PussyBoots
Mocha Manx
Mocha Mix
Mochi
Mocka
Moco
Mod
Modem
Modena
Modest
Moe
Moe Ellen Jeanmarie
Moe Moe
Moe-Monster
Moet
Moffitt
Mog
Mogadishu
Mogadon
Mogadonna
Mogget (after the character in the fantasy novels by Garth Nix)
Moggie
Moglet
Mogra
Mogsie
Mogul
Mogwai
Mogwyre
Mohave
Mohawk
Mohican
Mohrle
Moira
Moira Coon
Mojave
Moji
Mojo
Mojosito
Mojothunder
Moka
Mokey
Moki
Mokie
Mokin
Moku
Mold
Mole
Moll Flanders
Molley
Molley Muppett
Molli
Mollicoddle
Mollie
Molly
Molly Lou
Molly May Marie
Molly McButter
Molly Meganne Noelle
Molly Molla
Molly Silverpaws
Molly Sue
Mollye
Molson Moo Cat
Mom
Mom Kitty
Mom-Cat
Moma Puss
Momcat
Momma
Momma Cat
Momma Mutz
Mommy Kitty
Mommy-Kiddy
Mommycat
Momo (gangster from the movie "Get Shorty")
Momotaro
Mon Ami
Mon Cher Or Ma Cherie
Mona
Mona Lisa
Mondavi (from the californian winery)
Monday
Monet
Money
Money Honey
Monger
Mongo
Mongo (after a character in the movie Blazing Saddles)
Mongoose
Monica
Monica Kat
Monica Lewensky
Monika
Monique
Monk
Monkey
Monkey Face
Monkeybutt
Mono
Monochrome
Monroe
Monsanto
Monsieur
Monster
Monster Kitty
Monstrance
Montague
Montana
Monte
Monte Carlo
Montego
Monteque
Montezuma (after the Aztec god-king)
Montgomery
Montgomery Clift
Monther
Monty
Monty Python
Moo
Moo Moo Cat
Moo Moo Cow
Moo Shu
Moo-Moo
Mooby
Mooch
Moocher
Moochka
Moochmeister
Moochy
Moody
Moody Blue
Mooer
Moofik
Moofy
Mooggie
Moogie
Mookey Bear
Mookie
Mookie-Pookie
Mookitty
Moolie-moos
Moomoo
Moon
Moon Light
Moon Maiden
Moon Pie
Moon Unit
Moona
Moonbeam
Moonbean Or Moonmist
Mooncat
Moonchaser
Mooncritter
Moondance
Moondust
Moonflower
Moongoddess
Moonie (after the late drummer/hotel-room-wrecker Keith Moon)
Moonlight
Moonraker
Moonshadow
Moonshine
Moonstone Molly
Moonstruck
Moonunit
Moorea (island in Tahiti)
Moose
Mopar
Moped
Mopet
Mophead
Mophy
Moppet
Moppie Sloef
Mopsy
Moptop
Moqui
Morag
Morcheeba
Mordacious
Mordecai
Mordicai
Mordillo
Mordred
Morey
Morgaine
Morgan
Morgan Fairkitty
Morgan LeFey
Morgana
Morgen
Mori
Moriah
Moriarity
Moritz
Mork
Mork And Mindy
Morley
Morning Glory
Morning Star
Morocco
Morpheus
Morris
Morris Lynn
Morris Minor
Morrisey
Morrison
Morriz
Morse (after Inspector Morse)
Morsel
Mort
Mortcake
Morticia (Addams family)
Morticia Morena
Mortimer
Mortimore B. Zuckkerman
Mortina
Mortisha
Morton
Morty
Mosa
Mosby
Mose
Moselle
Moses
Mosey
Moshe
Moshto
Mosi (Navajo for "cat")
Mosis
Most
Most Handsome
Mother
Mother Lode
Mother Teresa
Motley
Motley Crue
Motley Tue
Moto
Motor
Motor Boat
Motor Man
Motor Unit
Motorino
Mottebal
Mouauia ibn Abihi (Arabic for "wailing bitch bastard")
Moufette
Mough
Mountainlion
Mouse
Mouse Doggie
Mouse McNasty
Mousekewitz
Mouseman
Mouser
Mouser Pounce-Fast
Mouseripper
Mousetrap
Mousie
Moussaka
Mousse
Moussette
Moussine
Moustache
Moustic
Moustick
Mousy
Mouth
Mouton
Movado
Movie Star
Movie Star Cat
Mow
Mow Mow
Mowcha
Mowgli
Mowp
Mowpurrs
Mowse
Moxi
Moxie
Moxie Muffin
Moxy
Moya
Moyshi
Mozart
Mozez
Mozie
Mozzerella
Mr Biggelsworth
Mr Bruce
Mr Monster
Mr. "B" ("Mr. Bastard")
Mr. A. Gray
Mr. Alfred
Mr. Anderson
Mr. Apricot
Mr. Bean
Mr. Beans
Mr. Beast
Mr. Bentley
Mr. Big
Mr. Big Stuff
Mr. Biggles Worth
Mr. Bigglesworth
Mr. Bill
Mr. Blue
Mr. Bojangles
Mr. Bonkers (from "That 70's Show")
Mr. Boots
Mr. Bowles
Mr. Brown
Mr. Bubbles
Mr. Bunny
Mr. C
Mr. Cat
Mr. Chips
Mr. Choo
Mr. Clovis Grimm
Mr. Cold Paws
Mr. Cotton
Mr. Dainty Paws
Mr. Dogfood
Mr. Fatcat
Mr. Fi Fi
Mr. Fish
Mr. Flatley
Mr. Fluff
Mr. Fur
Mr. Furrbody
Mr. Fuzz Butt
Mr. Fuzzy Nose and Toes
Mr. Fuzzybuns
Mr. Gingipuss
Mr. Goober
Mr. Goodkitty
Mr. Gotti
Mr. Hahn (after Joe Hahn, from the band Linkin Park)
Mr. Happy
Mr. Hudson
Mr. Jade
Mr. Jenkins
Mr. Jones
Mr. K
Mr. Katt
Mr. Kitty
Mr. Kitty to You
Mr. Krabbs
Mr. Krinkle
Mr. LittleHead
Mr. Lucky
Mr. Lucy
Mr. Lurch
Mr. M.
Mr. Macgeezer
Mr. Magoo
Mr. Magoo.
Mr. McFluffer
Mr. Mealy
Mr. Men
Mr. Mir
Mr. Mister
Mr. Mistoffolees
Mr. Moe
Mr. Mouse
Mr. Moustache (after the song by Nirvana)
Mr. Neo
Mr. Newman (after Victor Newman from The Young and the Restless)
Mr. Nibblesworth
Mr. O'Mally
Mr. Peepers
Mr. Pi
Mr. Pickles
Mr. PoPo
Mr. President
Mr. Puddy
Mr. Purrbody
Mr. Purrfect
Mr. Pussy
Mr. Roosevelt
Mr. Sandman
Mr. Scarfies
Mr. Sleepers
Mr. Sleepy
Mr. Snickers
Mr. Snuggle Bum
Mr. Sonny L. Burke (L. for "louse")
Mr. Sox
Mr. Spaz
Mr. Taz Man
Mr. Tibbs
Mr. Tickle Bum
Mr. Tilly
Mr. Tinkles
Mr. Topplemeyer
Mr. Tubbsaflubbs
Mr. Uhtman
Mr. Underfoot
Mr. Whiskers
Mr. Winkie
Mr. Winston (Winnie)
Mr. Wiskers
Mr. Woo
Mr. Wooten
Mr.Cuddly Buns
Mrackbudha
Mracks-A-Lot
Mri'Fa
Mrrow
Mrrranda
Mrs. Naugatuck
Mrs. Noris (after Filch's cat in the Harry Potter books)
Mrs. Peel (after the character in the tv-series "The Avengers")
Mrs. Silverspoon
Mrs. Tabitha Twitchet (from "The Tale of Tom Kitten" by Beatrix Potter)
mrs. Twinklebottoms
Ms. Agnes Depesto
Ms. Beach
Ms. Beasley
Ms. Bigglesworth
Ms. Cat
Ms. Cornwallis
Ms. Dikky
Ms. Grey
Ms. Kitty
Ms. Lester
Ms. Meowkins
Ms. Morgan
Ms. Piggy
Ms. President
Ms. Rascalini
Ms. Sassy Cat
Ms. Scott
Ms. Sweet
Ms. Terry
Ms. Woogies
Mu
Mu Shu
Muca (Gypsy for "cat")
Muchpurr
Muckl
Mucus
Mud
Mud duck
Mud Pie
Mud Puddle
Mudd
Muddles
Mudgie
Mudpie
Mudslide
Muenster
Mufasa (from The Lion King)
Mufasa (from the movie The Lion King)
Muff
Muffassa
Muffet
Muffi
Muffie
Muffie (from the Battle Star Glactica tv series)
Muffie-Roo
Muffin
Muffin Man
Muffin Muffin
Muffin-head
Muffinhead
Muffinman
Muffins
Muffinster
Muffioso
Muffster
Muffy
Mufti
Mug
Mugabe
Mugatu (after the character in the movie "Zoolander")
Mugger
Muggle Bear
Muggsy
Mugin
Mugsy
Mugwump
Muha
Muhammad Ali
Muira
Muk
Mulberry
Mulder
Muldoon
Mulle
Mullet
Mumbles (after the castle in Wales)
Mumford
Mumma
Mummies Little Angel Pie
Mummu Kitty
Mumsy
Muncher
Munchie
Munchkin
Munchy
Munchykin
Mundo
Mungo
Mungojerrie
Munk
Munku
Munkustrap
Munster
Muon
Mupee
Muppet
Mupps
Murcielago (Lamborghini)
Murderdoll Mayhem (after the band Murderdolls)
Murdock
Murfee
Murfy
Muriel
Murka
Murph
Murphy
Murphy Brown
Murray
Murrimann
Murzik
Muscatelli
Musch
Muscrat
Muse
Muselix
Musetta
Mushi
Mushka
Mushroom
Mushy
Muska
Muskustrap
Musli
Mustang
Mustard
Mutant
Mutiny
Mutt
Mutt the Bald
Mutza
Mutzy
Muu-Muu
MVP
My Girl
My Lady Sam
My Little Cat
My Little Girl
My Little Girl Girl
My Little One
My Little Pumpkin
My love
My Meow-Meow
Mya
Mycroft (named for Sherlock Holmes "smarter" brother)
Myer
Mykah
Myki
Mykonos
Myles
Mylette
Mymlan
Myna
Mynta
Mynx Poo-gas Pendragon
Myra
Myron Henry Miracle
Myrtle
Mysha
Mysin
Myska
Mystaya
Mystery
Mystery Girl
Mysti
Mystic
Mystina
Mystique
Myth
Mytsz
