Boy Cat Names: What Owners Actually Choose, and Where Each Name Comes From

Every list of boy cat names on the internet has five hundred entries and no idea which ones anyone uses. This page starts from the other end: the four datasets that record what male cats were actually called in 2025 in the United States, the United Kingdom, Australia and Canada, with the owner of each dataset and its year, because a ranking without those two facts is a guess in a spreadsheet. Then the origin of every name that made a top ten, checked against a dictionary or a museum page rather than a blog. Then the famous toms, with their real creators and dates. And only then a list, 250 names long, that you can pick from knowing what each one means.

The cat names hub holds the generator and the full pool; this page is the male half, explained. If your kitten is a girl, girl cat names does the same job for the other half. If you already know you want a name nobody at the vet has heard, unique cat names starts where this page's rankings end.

The 2025 rankings, market by market

Four sources, four methods. Three are Rover's own platform data (the names of cats registered by pet owners on its sitting marketplace, split by gender where its user surveys allow it). One is claims data from an insurer. None of them is a census, and none of them publishes an exact record count, which the table says out loud rather than hiding.

Two combined-gender datasets sit behind those and agree with them. U.S. News, working with 1,261,285 records from the pet insurer Fletch (January 2022 to July 2025), puts Leo, Milo, Oliver, Simba, Max and Shadow inside its all-cats top ten. Go.Compare's UK quote data for 2025 has Milo second overall behind Luna, then Simba, Loki, Leo and Charlie. When a platform's registrations and an insurer's claims land on the same six names, the names are real.

Six names rule every country at once

Put the four male lists side by side and six names appear in all of them: Milo, Leo, Charlie, Loki, Max and Simba. Four countries, four data providers, two methods, one answer. Milo is first in the US and the UK and second in Australia and Canada; Leo is first in Australia and Canada and inside the top three everywhere else.

That agreement is the most useful fact on this page, in both directions. If you want a name that will sound normal to a vet receptionist in Perth, Manchester, Toronto or Denver, it is one of those six. If you want a name that is genuinely uncommon, it is none of them, and Loki is the trap: it reads like an edgy choice and ranks fourth in the UK and fifth in the US and Canada.

What moved this year

Where a source published two consecutive years, the movement is measurable, and it is smaller than the listicles suggest.

• United States (Rover, 2024 to 2025): Milo held first both years. Leo and Oliver swapped second and third. Charlie, Loki, Max and Simba held positions four to seven unchanged. Jack and Jasper fell out of the ten; Shadow and Binx came in at eight and nine.
• Canada (Rover Canada, 2024 to 2025): the most stable list of the four. Leo, Milo, Simba, Charlie, Loki and Oliver held positions one to six both years. Jasper and Max swapped seventh and eighth; George dropped out and Ollie entered at ninth; Jack held tenth.
• United Kingdom (Go.Compare, combined genders, 2024 to 2025): Loki and Willow each rose two places, Coco and Leo each fell two, and Nala entered the ten. Go.Compare's own release attributes Nala's arrival to "Mufasa: The Lion King" reaching UK cinemas in December 2024, a rare case of a ranking explaining itself.
• Australia (Pet Insurance Australia, 2024 to 2025): near-total turnover. Only Milo, Archie and Prince appear in both years' male top tens. Leo, the 2025 number one, was not in the 2024 ten at all, and neither were Bluey, Billy, Simba, Bear, Oreo or Mochi.

That Australian turnover deserves one more sentence. The insurer's 2025 release says Leo and Milo "remain" the nation's favorite male names. Its own 2024 release ranked Hugo first and did not rank Leo in the ten. "Remain" is press-release language; the data behind it shows a list that reshuffled almost completely, which is more interesting than the sentence that hid it.

Where the top names come from

The etymologies below are read at Behind the Name, the Online Etymology Dictionary or Wiktionary with its cited references, never at a pet blog. Where a source says an origin is uncertain, so does this page.

• Milo: the English and Germanic form of Miles, also its Latinized form; the name had a 19th-century revival in England, possibly helped along by the unrelated ancient Greek name Milo.
• Leo: Latin for lion, borne by 14 popes, six Byzantine emperors and five Armenian kings, and the name of the zodiac constellation.
• Oliver: from Old French Olivier, possibly from Latin oliva (the olive tree) or from a Germanic root related to Olaf; carried through the Middle Ages by the epic La Chanson de Roland and through the 19th century by Dickens.
• Charlie: the diminutive of Charles, from Latin Carolus, from Germanic Karl, most likely "man"; made prominent by Charlemagne.
• Loki: origin uncertain, possibly a Germanic root meaning "lock." The Norse trickster god, father of the wolf Fenrir, the serpent Jormungandr and Hel, prophesied to slay and be slain by Heimdall at Ragnarok. Not an obscure choice: fourth in the UK, fifth in the US and Canada.
• Max: short for Maximilian, itself a diminutive of Latin maximus, "greatest," coined deliberately in the 15th century for the son of Holy Roman Emperor Frederick III.
• Simba: Swahili for lion; the name's popularity is tied by the reference entry itself to Disney's 1994 film.
• Oscar: possibly Old Irish "deer" plus "friend," or Old English Osgar; in Irish legend the son of the poet Oisin and grandson of Fionn mac Cumhaill. Napoleon suggested it as a middle name for his godson, who became King Oscar I of Sweden.
• George: from Greek georgos, an earth-worker or farmer; patron saint of England through the dragon legend attached to a 3rd-century Roman soldier, and uncommon in England until George I took the throne in 1714.
• Teddy: from Theodore, Greek "gift of god"; carried by several early saints, rare in Britain until the 19th century.
• Jasper: from Latin Gaspar, possibly from a Hebrew word for treasurer via Old Persian; traditionally one of the Magi, and also the gemstone.
• Jack: a medieval diminutive of John (from "Jankin"), with a possible push from the French Jacques; it became the general word for a man, which is why we still say lumberjack.
• Archie: from Archibald, Germanic "pure" or "genuine" plus "bold"; common in Scotland from the Middle Ages, where it stood in for the Gaelic Gilleasbuig.
• Merlin: Geoffrey of Monmouth Latinized the Welsh Myrddin in the 12th century and chose "Merlinus" over the more faithful "Merdinus" to avoid an echo of the French word for excrement. The Australian top ten's ninth name owes its spelling to a medieval author's tact.
• Bear: Old English bera, from a Proto-Germanic word meaning "the brown one," a euphemism that replaced the older Indo-European word (still visible in Latin ursus and Greek arktos) because hunters would not name the animal directly. A cat called Bear carries a taboo four thousand years old.
• Mochi: a real Japanese word, not an invented cute sound: the modern form of an older compound meaning pounded cooked grains, recorded as "cachin" in a Japanese-Portuguese dictionary of 1603.
• Felix: a Roman cognomen meaning lucky or successful, later a title of the general Sulla, and the name of four popes. The cartoon cat is a separate story, below.
• Finn: the usual English spelling of Fionn, the Irish mythological hero Fionn mac Cumhaill, and the surname of Mark Twain's Huckleberry. A well-known name that did not make any 2025 top ten.
• Toby: from Tobias, the Greek form of Hebrew Tobiah, "God is good," from the Book of Tobit; usage rose in England after the Reformation.
• Winston: an English surname from either an Old English given name or a place name meaning "Wine's town," popularized by Churchill and by Orwell's Winston Smith.
• Zeus: from an Indo-European sky god whose root, "sky" or "shine," also gives Latin Jupiter and Old Norse Tyr.
• Odin: from a word meaning frenzied or inspired, the supreme god of Norse mythology, god of war, wisdom and death; ranked fifth in Australia in 2024 and gone in 2025.
• Apollo: the reference source presents three competing origins (an Indo-European root for strength, an Anatolian deity, and a later Greek folk link to "destroy") and picks none, so neither do we.
• Simon: Greek, from Hebrew Shimon, "hearing"; the apostle Peter's given name, widespread in medieval England and rare after the Reformation.
• Louie: the informal spelling of Louis, the French form of Ludwig, from Germanic "loud" plus "warrior," the name of 18 French kings.
• Bandit: from 1590s Italian bandito, an outlaw, from a verb meaning to banish.
• Buddy: American English from 1850, of uncertain origin, possibly an alteration of "brother" or from a British word for a companion documented since 1802.
• Smokey: a spelling of smoky, from an Old English word for smoke, which is exactly what it says.
• Shadow: eighth in the US, and the one top-ten name for which Behind the Name records no definition at all. It is a word, not a name with a history, and this page will not invent one.
• Oreo: seventh in the UK and eighth in Australia, and its maker has never confirmed where the word comes from. Wikipedia lists five competing theories, from French or (gold) to Greek oros (mountain). An unsolved name for a cat with a cookie's coat.

The famous toms, with their real dates

• Tom of Tom and Jerry was created by William Hanna and Joseph Barbera and debuted in "Puss Gets the Boot" on February 10, 1940. In that first short the cat was called Jasper; MGM ran a studio naming contest for the sequels, and animator John Carr won 50 dollars for suggesting Tom and Jerry. "Tom" was already the everyday word for a male cat before the studio adopted it.
• Garfield was created by Jim Davis and launched nationally on June 19, 1978 in 41 newspapers. Davis named him after his own grandfather, James A. Garfield Davis. By 2013 the strip held the Guinness World Record for the most widely syndicated comic, in roughly 2,580 publications. Garfield is orange, so he belongs on orange cat names as much as here.
• Sylvester, full name Sylvester James Pussycat Sr., was created by Friz Freleng and debuted in "Life with Feathers" on March 24, 1945, voiced by Mel Blanc from 1945 to 1989. Three of his cartoons won Academy Awards, more than any other Looney Tunes character. A tuxedo cat, in the strict pattern sense.
• Felix the Cat first appeared in "Feline Follies" on November 9, 1919, initially under the name Master Tom, and was renamed Felix by his third cartoon. The credit is disputed: animator Otto Messmer is generally credited, while producer Pat Sullivan claimed sole authorship during his lifetime. A Felix figure on a revolving turntable was the test image for one of the first experimental television broadcasts in 1928.
• Mr. Mistoffelees comes from T.S. Eliot's "Old Possum's Book of Practical Cats" (1939) and became a lead in Andrew Lloyd Webber's "Cats" (1981). His name derives from the demon Mephistopheles, though the character is a conjuror, not a villain.
• Crookshanks, Hermione Granger's half-Kneazle ginger cat, bought in August 1993 in the books' timeline; the name describes his bandy legs (crook, bend; shank, lower leg). He is the one who spots that Ron's rat is a wizard in disguise.
• Jonesy, the ship's cat in "Alien" (1979): four identical cats played the role, and Sigourney Weaver discovered on set that she was allergic to the glycerin used to fake sweat on their handlers, so it was dropped for her scenes.
• Church, short for Winston Churchill, the family cat in Stephen King's "Pet Sematary" (1983), killed on the highway and brought back wrong. The novel's whole dread starts with a cat.
• Puss in Boots is older than any of them: the earliest written version is Straparola's, around 1550, and the version everyone knows is Charles Perrault's of 1697.
• Tigger is on every boy-cat list and is not a cat. A. A. Milne coined the name for the stuffed tiger in "The House at Pooh Corner" (1928), based on Christopher Robin Milne's own toy, and the word "tiger" never appears in the books. Name your cat Tigger by all means; just know you are naming him after a tiger.

Local color: the names only one country uses

The union of the four male top tens holds 23 names. Beyond the six universal ones, most of the rest belong to a single market, and they say something about it.

• Bluey, third in Australia, is the cartoon dog, and appears in no other country's top ten. The most Australian name a cat can have.
• Billy, Prince, Archie and Bear are the rest of Australia's own list; Oscar, George and Teddy are the UK's; Shadow, Binx and Ollie the United States'; Jasper and Jack Canada's. Binx is the black cat of "Hocus Pocus" (1993), which is why he also sits on black cat names.
• Oreo and Mochi are the food names that made a male top ten, in the UK and Australia respectively. The full food trend, with the numbers behind it, is on cute cat names.

250 more boy cat names, by style

None of these ranked in a 2025 top ten, which is the point of the list: they are real names owners use, checked against this site's existing pool so nothing here repeats what the hub already offers. Notes appear only where the origin is a fact.

Classic, the names that sound like a person

• Simon, Julian, Malcolm, Nathaniel, Sherman, Wendell, Elton, Marlon, Clifford, Vernon
• Aldous, Byron, Emerson, Foster, Grady, Ignatius, Kingsley, Lucius, Maxwell, Preston
• Quincy, Roscoe, Ulysses, Virgil, Wallace, Xavier, Zeke, Chadwick, Dashiell, Elwood
• Gustav, Hamish, Irwin, Jethro, Linus, Wesley, Milton, Aubrey, Beckett, Callum
• Cormac, Dashwood, Ellis, Fitzwilliam, Graham, Holt, Ivor, Kellan, Lachie, Maddox
• Nash, Piers, Rafferty, Stellan, Tobin, Underwood, Vito, Weston, Xander, Zander
• Bramwell, Cassian, Delano, Ezekiel, Ferris, Hollis, Ivo, Jaxon, Kirkland, Lucca
• Norwood, Oakes, Pascal, Sinclair, Thackeray, Weatherby, Xerxes, Yates, Abernathy, Beauregard
• Farley, Hawthorne, Kingston, Rhodes, Sutton

Unique, from the rock shop and the atlas

• Magnus, Orson, Silas, Thaddeus, Upton, Vaughn, Winfield, Zebulon, Barclay, Crosby
• Declan, Finnegan, Gideon, Harrison, Keegan, Lachlan, Nixon, Tanner, Vance, Timber
• Wolfgang, Granite, Canyon, Basalt, Cobalt, Denim, Flannel, Gravel, Hickory, Jetstream
• Kelvin, Nickel, Obsidian, Pewter, Rust, Umber, Vellum, Larkspur, Yeager

Pop culture, each with its source

• Wolverine, Gambit and Deadpool (Marvel); Mando, Grogu, Vader, Palpatine and Skywalker (Star Wars); Morpheus (The Matrix)
• Gollum, Sauron, Legolas, Aragorn, Boromir, Gimli, Merry, Pippin and Radagast (The Lord of the Rings)
• Voldemort, Snape and Hagrid (Harry Potter); Mufasa, Pumbaa, Timon and Rafiki (The Lion King)
• Shere Khan and Mowgli (The Jungle Book); Aladdin and Genie; Triton (The Little Mermaid, and a Greek sea god)
• Hercules, Hades, Perseus and Achilles (Greek myth); Gatsby; Radley (Boo Radley, To Kill a Mockingbird)
• Gable (Clark Gable), Idris (Idris Elba), Montague (Romeo and Juliet), Nero (the emperor), Orwell, Quixote

Japanese, the names and the menu

• Sho, Kenshin, Katsu, Takumi, Yuma, Kaito, Tatsu, Ryo, Ryota, Hayate
• Musashi, Satoshi, Takeshi, Kazuki, Daisuke, Wataru, Naoki, Ichiro, Kotaro, Kenzo
• Hideo, Masaru, Fumio, Tsubasa (wing), Souta, Haruto, Sosuke, Yamato, Tsuki (moon), Hoshi (star), Kumo (cloud)
• Dango, Edamame, Fugu, Gyoza, Inari, Konbu, Nato, Onigiri, Soba, Udon, Yakitori
• Kabuto, Ronin, Shogun, Daimyo, Ninja, Samurai, Sensei

The meanings, with their kanji, are on Japanese cat names.

Funny, mostly puns on people who did not consent

• Meowgi (Mr. Miyagi), Purrlock Holmes, Clawed Monet, Furrari, Bill Meowray, Tom Hiddlecat, Indiana Bones, Franz Furdinand, Kitty Perry, Meowriarty
• Pawcasso, Furdinand, Meowzers, Pawlo Nutini, Kitty Galore, Meow Farrow, Sir Meowsalot, Catso, Purrsimmon, Meowtain Dew
• Pawdro Pascal, Furbie, Catapult, Sir Naps-a-Lot, Pawtrick Stewart, Meowchael Jackson, Kitty McKittenface, Meowsevelt, Meowbi Wan Catnobi

The mechanics of a good cat pun, and the famous cats whose real names people copy, are on funny cat names.

Cute, the small and edible

• Cinnamon, Marbles, Skittle, Squirt, Snowball, Chowder

What to take away

• Six boy cat names rank in the 2025 male top ten of the United States, the United Kingdom, Australia and Canada at once: Milo, Leo, Charlie, Loki, Max and Simba, across four datasets and two methods.
• Milo is first in the US (Rover) and the UK (Rover UK); Leo is first in Australia (Pet Insurance Australia) and Canada (Rover Canada).
• Year to year, the US and Canadian lists barely move (the top six or seven held in both countries), while Australia's male top ten turned over almost completely between 2024 and 2025.
• Loki looks like an uncommon choice and ranks fourth in the UK and fifth in the US and Canada; a truly rare name is not on any of the four lists.
• Two top-ten names have no settled origin: Shadow has no dictionary definition as a name, and Oreo's maker has never confirmed where the word comes from.
• Tom, Garfield, Sylvester and Felix have real birthdays: 1940, 1978, 1945 and 1919; Tigger is a tiger.