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120+ Cat Names That Start With O for Your Outstanding Kitty

Gregory Iacono

By Gregory Iacono

woman stroking black and white cat

You’ve finally arrived home with your new cat and couldn’t be more pleased. You have everything you need to care for your new pet, including cat toys, food bowls, a top-notch litter box, and even a scratching post! There’s one thing, however, that your new feline friend needs more than all the rest, and that’s a good name.

Below, you’ll find 120+ cat names that start with the letter “O.” If an original, ostentatious, and outlandish cat name is what you want for your kitty, read on!

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What’s the Best Way to Name a Cat?

There are many ways to name a cat, including picking a name from a hat! In all seriousness, you can name your cat anything you like, but remember that you’ll be using and saying it often, so be sure to make it memorable, fun, and easy to say.

Some of the best ways to name a cat include the following:
  • After one of their most notable traits or their color, like Oblong, Obnoxious, Onyx, or Orange
  • After someone you love, adore, or admire, such as Oscar, Oblio, or Orentha
  • After the situation in which you adopted them, like Oopsie or Outdoors
  • After one of your favorite characters from fiction, music, films, or history, such as Ozzy, Otis, or Olivia

We will delve deeper into all of these methods and a few more below. Whichever method you choose, you’re sure to pick a cat name with O that makes friends and family say, “Oh my, that’s original!”

bengal cat biting owners ear
Image Credit: AJR_photo, Shutterstock

Celebrity and Famous Cat Names that Start With O

If you want your cat to feel like a celebrity or are infatuated with a famous person, choosing a name for your kitty based on that celeb can be a fun way to choose your cat’s name. We’ve chosen names from reality TV, movies, and musicians. We’ve also included famous people who, while not “stars” per se, are still famous in their own right.

  • Ozzy (Osbourne, the musician
  • Omar (Shariff, the actor)
  • Orlando (The Florida city and the English actor)
  • Olivia (Newton-John, the superstar)
  • Otis (Redding, the musician)
  • Oscar (the Grouch)
  • Octavia (Spencer, the actor)
  • Owen (Wilson, the actor)
  • Orson (Wells, the legend)
  • Omar (Epps, the actor)
  • Oprah (Winfrey, the media mogul)
  • Odell (Beckham, Jr., the NFL player)
  • Ogden (Nash, the poet)
  • Oscar (Wilde, the playwright)
  • Orville Redenbacher (the popcorn magnate)
  • Oskar (Schindler, the activist)
  • Olympia (Dukakis, the actor)
  • Oliver (Hardy, of Laurel and Hardy fame)
  • Ossie (Davis, the actor and writer)
  • Olga (Korbut, the Olympic Gold medal gymnast)
  • Ozzie (Nelson, the actor)
  • Oksana (Baiul, the Olympic gold medal figure skater)
  • Orel (Hershiser, the MLB World Series-winning pitcher)
  • Oleg (Cassini, the designer)
  • Ole (Kirk Christiansen, the inventor of Lego bricks)
  • Oil (Can Boyd, the legendary MLB pitcher)
person taking picture of a cat
Image Credit: Beatriz Vera, Shutterstock

Fictional Character Cat Names That Start With O

If you’re a fan of fiction or have a favorite movie, book, or TV show with a character whose name starts with the letter O, naming your cat after them isn’t as outrageous an idea as you might think! Below are some opportunistic O names to give your cat based on some of the best fictional characters.

  • Odin (From the Thor MCU universe)
  • Optimus Prime (the Transformer!)
  • Olaf (from Frozen)
  • Olivander Garrick (from the Harry Potter books)
  • Oscar Hernandez (from The Office, US version)
  • Oswald Cobblepot (the Penguin from Batman comics)
  • One Punch Man
  • Oompa Loompa (the OG minions from Willy Wonka)
  • Olive Oyl (Popeye’s sweetheart)
  • Oliver Queen (the Green Arrow!)
  • Otto Mann (from The Simpsons)
  • Olivia Benson (from Law and Order: SVU)
  • Otto Hightower (from Game of Thrones)
  • Otto Octavius (Dr. Octopus from Spiderman)
  • Obelix (best friend of Asterix, the Gaul)
  • Osmosis Jones (from the movie of the same name)
  • Obi-Wan Kenobi (from Star Wars)
  • Odie (Garfield’s best buddy!)
  • Oblio (from The Point)
  • Othello (Shakespeare’s character)
adorable cat in superhero costume
Image Credit: Anton27, Shutterstock

Cute and Silly Cat Names That Start With O

Cats are, without a doubt, some of the cutest and silliest creatures on planet Earth. YouTube is filled with videos attesting to that. Choosing a name that’s either cute or silly and begins with O is perfect for an unusual feline.

  • Oatmeal
  • Okie (from Muskogee)
  • October Breeze
  • Omega Cat
  • Otter
  • Octopussy
  • Ocean’s 9 Lives
  • Oddball
  • Outburst
  • Outlandish Kitty
  • Ocean Breeze
  • Obnoxious
  • Oddly Attractive
  • Oopsy-Daisy
  • Oblong
  • Obnoxious Fuzzball
  • Oh, Please!
  • Ouch!
  • Ox
cute white british shorthair cat leaning on wooden counter looking to the side
Image Credit: Nils Jacobi, Shutterstock

Historical Cat Names That Start With O

People from history can often be a fantastic source of names for a cat, especially if you’re looking for names that start with O. The list of O names below will be a great fit for many kitties looking to put their mark on the history books!

  • Osama bin Laden
  • Obama
  • Oppenheimer
  • OJ (Controversial!)
  • Olympus
  • Oliver Wendell
  • Onassis
  • Otto von Bismarck
  • Oliver North

Food-based Cat Names That Start With O

If you’re a foodie and want to give your cat a delicious name that will stay on the tip of your tongue, the cat names below are ideal. Just be warned that you might just get hungry when you call your cat using one of the following names!

  • Oreo Cookie-puss
  • Oatmeal Cookie
  • Orange Sherbet
  • Olive Tapenade
  • Oyster Stew
  • Onion Soup
  • Oolong Tea
  • Okra Winfrey
  • Orzo
  • Ossobuco
Hand feeding hungry seal point siamese cat with treats stick
Image Credit: Nils Jacobi, Shutterstock

Cool Cat Names That Start With O

Our last category for cat names that begin with O is one of the best! It’s a list of the coolest, hippest names! To ensure your cat is cooler than a night in Siberia, be sure to choose one of the names below that begin with O!

  • Outlaw Josey Wales
  • Oblivion
  • Omega Cat
  • Outlander
  • Orange Crush
  • Outcast Kitty
  • Obsidian
  • Orbiting a Furry Sun
  • Overkill
  • Oboe
  • Orphan
  • Odds Fish!
  • Outwit the Dog
  • Outrageous Kitty
  • Outburst in the Court
  • Oberon
  • Osiris
  • Orin
  • Obadiah Stains Everything
  • Ozymandias
  • Ophelia
  • Orchid
  • Osaka
  • Odessa
  • Orphia
  • Ontario, Canada
  • Orella
  • Oslo
  • Oaklynn
  • Olinda
  • Osmunda
  • Oxalis
  • Oisin
  • Oxford
  • Opie
  • O’Malley, the Alley Cat
  • OMG!
  • One for the Ages
  • Odysseus
  • Oasis
  • Oleander
  • Oliver Twisted
  • Orca the Killer Cat
  • Opulence
Image Credit: otsphoto, Shutterstock

Final Thoughts

Naming your cat doesn’t have to be difficult or time-consuming, but it deserves more attention than tying your shoes. That’s because the name you give your cat will stick with them their entire life.

We hope the list of cat names starting with O has been original and a little outlandish but optimal for your needs! Best of luck with your new kitty and choosing a name that fits them perfectly!

Featured Image Credit: Sam Lion, Pexels

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