Coming up with names starting with the letter “O” is quite a task.
While the mythology is filled with names starting with “O”, it is impossible to come up with names other than that.
But here we are, with an extensive list of 200 names spread across 10 different categories.
1. Aesthetic & Soft ‘O’ Names
For pups with dreamy eyes and peaceful vibes. 🌸🌙
- Olive
- Orion
- Opal
- Ollie
- Ocean
- Oakley
- Orla
- Onyx
- Odelia
- Oslo
- Ophelia
- Ozzy
- Octavia
- Oona
- Oberon
- Oriel
- Oakes
- Odel
- Orin
- Ora
2. Foodie & Sweet ‘O’ Names
For dogs who drool at every snack sound and live for treats. 🍩🧁
- Oreo
- Oatmeal
- Olive Oil
- OJ
- Oregano
- Oatball
- Okra
- Orzo
- Orange Pop
- Ovaltine
- Omelette
- Ouzo
- Olallieberry
- Oysters
- Olive Pit
- Orangelina
- Oishi
- Oolong
- Onion Ring
- Oaty
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3. Bold & Fierce ‘O’ Names
For the dogs who own the room the moment they walk in. 🐾🔥
- Onyx
- Omega
- Orion
- Osiris
- Odessa
- Odin
- Olympia
- Outlaw
- Outrage
- Omen
- Oblivion
- Oracle
- Oath
- Ox
- Overdrive
- Oska
- Omari
- Oxana
- Overkill
- Ozer
4. Nature-Inspired ‘O’ Names
Earthy and wild names for dogs who live for the outdoors. 🌿🌊
- Oak
- Ocean
- Olive
- Orion
- Opal
- Oasis
- Ozone
- Overcast
- Osprey
- Outcrop
- Obsidian
- Orchid
- Overleaf
- Oxalis
- Oystercatch
- Olive Tree
- Onshore
- Overgrowth
- Outback
- Otter
5. Royal & Elegant ‘O’ Names
For dogs who carry themselves like four-legged royalty. 👑✨
- Octavia
- Otto
- Olympia
- Orson
- Odetta
- Odelia
- Oswald
- Oriana
- Oberon
- Ottilie
- Orinthia
- Osmond
- Orabella
- Olivette
- Ottoline
- Osric
- Olyssa
- Orrin
- Othilia
- Olwyn
6. Fun & Playful ‘O’ Names
For goofy goofballs and waggy-tailed comedians. 🎉😂
- Oopsie
- Oodle
- Ollipop
- OopsyDoo
- Oink
- Oodles
- Ouchie
- Orbee
- Okeydokey
- Ohana
- OttoBot
- Ooglie
- Opie
- Omeeko
- Ooboo
- OopsyPaws
- Orbitz
- Owlet
- OopieDoo
- Olligator
7. Vintage & Classic ‘O’ Names
Timeless charm for dogs who are a little old soul inside. 🕰️📜
- Oswald
- Olive
- Otto
- Opal
- Orville
- Odelia
- Otis
- Oona
- Orson
- Octavia
- Oma
- Orrin
- Odette
- Osmond
- Orla
- Odetta
- Obie
- Olivette
- Orlando
- Ophelia
8. Quirky & Rare ‘O’ Names
Unusual, offbeat, and unapologetically original. 💫🌀
- Ozma
- Orzo
- Ozymandias
- Ospina
- Odalis
- Ouija
- Oberta
- Onida
- Othello
- Ophira
- Ollivander
- Orpheus
- Ozella
- Olinka
- Orlin
- Oba
- Ombra
- Ormi
- Oska
- Ocelia
9. Cool & Edgy ‘O’ Names
For the pups with swagger and attitude to spare. 😎🎸
- Ozzy
- Onyx
- Ox
- Outlaw
- Omen
- Omari
- Omega
- Orbit
- OttoX
- Octane
- Orik
- Odi
- Ollivox
- Orvo
- Overload
- Omni
- Ordrik
- Outburst
- Ozeki
- Obsidio
10. Pop Culture ‘O’ Names
Famous, fictional, or fan-favorite—these pups were born to be stars. 🎬🌟
- Olaf
- Obi
- Oliver
- Oprah
- Ozzy (Osbourne)
- Oppenheimer
- Octavia (The 100)
- Orko
- Owen (Wilson)
- Olafur
- Oz (Wizard)
- Orla (Harry Potter)
- Odinson
- Odie (Garfield)
- Oaken (Frozen)
- Omari (Hardwick)
- Orpheus (Matrix)
- Olympia (Percy Jackson)
- Opie (Sons of Anarchy)
- Owen (Jurassic World)
Well, what are you waiting for?
Now that you have the list at your fingertips, get going.
Let us know what else you would want us to write about!
Nikita Rout is a passionate content writer at HowItSee.com, where she explores the wonders of animals, nature, and the curious questions that spark our imagination. With a love for research and a knack for simplifying complex topics, she brings clarity and creativity to every article she writes. When she’s not writing, you’ll likely find her reading about animal behavior or coming up with unique pet name ideas.
