Choosing a name for your new puppy is an exciting part of welcoming them into the family! If you're leaning toward names that start with O, this list of 253 names provides plenty of options. Inspired by the NYC Dog Licensing Dataset, we've gathered a variety of choices for both male and female dogs, from classic to unique.
Whether you’ve welcomed a loyal Otterhound, an outgoing Old English Sheepdog, or an observant Ovcharka, a name beginning with O could be the perfect match. Explore our list to find a name that captures your puppy’s personality and charm!
Male Dog Names Starting with O
Looking for a name that stands out for your male puppy? Here’s a collection of male dog names beginning with O, perfect for any strong or playful boy.
| Oak |
Oakie |
Oakland |
Oakley |
Oakly |
| Oat |
Oatis |
Oatmeal |
Oaty |
Obadiah |
| Oban |
Obelix |
Oberon |
Oberyn |
Obi |
| Obie |
Obsidian |
Oby |
Ocasio |
Ocean |
| Ocho |
Octavius |
October |
Odango |
Oddie |
| Odell |
Oden |
Odi |
Odie |
Odin |
| Odiseo |
Odo |
Odoyle |
Ody |
Odysseus |
| Oero |
Oeuf |
Oggi |
Oggie |
Ogie |
| Ohio |
Oil |
Oilly |
Oisin |
Ojeda |
| Oji |
Ojitos |
Okami |
Okapi |
Okey |
| Okie |
Oko |
Okra |
Olaf |
Olan |
| Old |
Oldstone |
Oli |
Olie |
Olio |
| Olive |
Oliver |
Olivery |
Olivier |
Ollie |
| Ollivander |
Olliver |
Olly |
Olmo |
Olphie |
| Omar |
Omega |
Omelette |
Omi |
Once |
| Ondo |
One |
Onion |
Onix |
Onslow |
| Onyx |
Oogie |
Oogy |
Oolong |
Oompa |
| Opal |
Opie |
Oppa |
Optimus |
Orachino |
| Orange |
Orbit |
Oree |
Oregano |
Oreilly |
| Orejas |
Oreo |
Orfeo |
Ori |
Orie |
| Orin |
Orio |
Orion |
Oris |
Orlando |
| Orochimaru |
Orraios |
Orsino |
Orso |
Orson |
| Ortega |
Ortiz |
Ortley |
Orville |
Orvy |
| Orwell |
Ory |
Orzo |
Oscar |
Oshi |
| Osho |
Osi |
Osias |
Osiris |
Osito |
| Oskar |
Oskee |
Oski |
Oskie |
Oslo |
| Osmo |
Oso |
Ossie |
Osso |
Oswald |
| Oswaldo |
Otello |
Othello |
Otho |
Otie |
| Otis |
Otter |
Ottimo |
Ottis |
Otto |
| Otty |
Ouranos |
Ouzo |
Ovi |
Ovo |
| Owei |
Owen |
Oxford |
Oxy |
Oyster |
| Ozmandias |
Ozy |
Ozymandias |
Ozzie |
Ozzy |
Female Dog Names Starting with O
If you’re searching for a beautiful name for a female puppy, these names starting with O offer a variety of options that will suit any personality!
| Oakley |
Oaks |
Oatis |
Oatmeal |
Obi |
| Oboe |
Ocean |
Oceana |
Ochie |
Ochoa |
| Ochun |
Ocoee |
Octavia |
October |
Oda |
| Oddjob |
Odessa |
Odette |
Odie |
Odyssey |
| Ofelia |
Offer |
Ohana |
Ohren |
Oiche |
| Oinkie |
Oinks |
Ojeda |
Okami |
Okie |
| Olena |
Olga |
Oli |
Olina |
Oliva |
| Olive |
Oliver |
Olivia |
Ollie |
Oly |
| Olympia |
Omi |
Ona |
Ondoe |
Oni |
| Onyx |
Onyxx |
Oogie |
Oona |
Oopla |
| Opal |
Ophelia |
Ophra |
Opie |
Oppa |
| Oprah |
Opus |
Orange |
Orangina |
Orchard |
| Orchid |
Ore |
Orea |
Oreo |
Ori |
| Oriana |
Orie |
Orio |
Oriole |
Orla |
| Orlee |
Orly |
Orpah |
Ortega |
Ortiz |
| Osa |
Oscar |
Osha |
Osita |
Oslo |
| Osum |
Otis |
Otish |
Otter |
Ottla |
| Ottli |
Otto |
Oui |
Ouisie |
Owlkill |
| Ozuna |
Ozzie |
Ozzy |
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More Ideas for Dog Names
Looking for even more options? Check out our other lists of dog names organized by letter and theme to help you find a name as unique as your new puppy.
