The Best Dog Names That Start With O

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Written by: Celestine Gomez
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My heart dropped. I was calling out my dog’s name, ‘Otis!’. I got louder and louder, but I couldn’t see him. Gradually, in the distance, I heard other people calling out the same name. 

I looked around the park and saw several dogs running around, confused. They didn’t know who to run to. I was bounded at by an unknown German shepherd and pawed at by an unfamiliar chihuahua. 

They were all called Otis. 

Eventually, I found my dog, but it got me thinking; ‘Why didn’t I come up with a more original name?’

Sure, it was short and simple. It wasn’t the same as any humans in the house. But that didn’t change the fact that it was a very common dog name.

If you’re like me, you might have already invested some money in personalized bowls, collars, and blankets for your friend. You might want to stick to the ‘O’ theme. Or maybe you just like the letter. Either way, you might appreciate these lists of the best dog names that start with ‘O’.

Please bear in mind that your dog won’t be a puppy forever. Dogs can live to be around 15 years old, sometimes more. It’s good to give them a name that’s versatile and that they can use throughout their lives.

That’s why I’m giving you a nice mixture of names, from quirky to cool.

The Best Dog Names

While Otis is a pretty common name for a dog, it has that lifelong versatility. I think that comes from it being a human name. A lot of the best names for dogs are human names too. There are a few others that are a little more out there. Here are some of the best names that any dog can use.

  • Oscar
  • Olivia
  • Olly
  • Olive
  • Oslo
  • Oakley
  • Owen
  • Ozzie
  • Olaf
  • Oreo
  • Olette
  • Opal
  • Ohana
  • Olga
  • Oni
  • Oishi
  • Obri
  • Omegle
  • Ona

The Best Female Dog Names

On the other hand, you might have a little girl dog in the house. While there are plenty of names that work for either sex, your friend might be better suited to a feminine name.

  • Octavia
  • Oksana
  • Odell
  • Oliviana
  • Odetta
  • Olympias
  • Oiva
  • Ondrea
  • Okera
  • Ombretta
  • Okimi
  • Oma
  • Oleta
  • Ophelia
  • Orchid
  • Olivine
  • Orla
  • Ora
  • Ottilie
  • Osiana

The Best Male Dog Names

But then, you might have a boy dog at home, in need of a name. In that case, you might want a name to suit him. Here’s a list of the best boy dog names:

  • Oakley
  • Odin
  • Oren
  • Oliverio
  • Oliver
  • Odysseus
  • Osmond
  • Orange
  • Omar
  • Orel
  • Odgar
  • Osaze
  • Oldrich
  • Omarion
  • Onslow
  • Oren
  • Ophion
  • Orson
  • Orlando
  • Osric
  • Ozzy
  • Oxley
  • Odhran
  • Orion
  • Otto
  • Owen

The Best Quirky Dog Names

Whether they’re a boy or a girl, your dog might be quirky. You might want a unique name to reflect that. While some of these might be a little long for a dog to remember, they can be shortened.

  • Oak
  • Onslow
  • Oswald
  • Ohio
  • Owen
  • Ova
  • Okay
  • Oval
  • Ozanne
  • Oswin
  • Oroonoko
  • Otha
  • Orinthia
  • Orpha
  • Ottilia
  • Ottoline
  • Ornate
  • Ouzie
  • Ouzie
  • Ozanne
  • Osiris
  • Onyx
  • Octavio
  • Obadiah
  • Olof
  • Orris
  • Orrin
  • Onomatopeia

The Best Cute Dog Names

Boy, girl, or oddball, maybe your dog’s most noticeable trait is that they’re a little cutie. If that’s true, you might be looking for a name that reflects that. Here are some of the best cute names that start with an ‘O’.

  • Orville
  • Ozette
  • Ottie
  • Otto
  • Oregano
  • Orville
  • Omelet
  • Onion
  • Ounce
  • One
  • Okie
  • Owl
  • Obe
  • Oz
  • Ogee
  • Orca
  • Ox
  • Oatmeal
  • Orville
  • Opie


And that’s 100 of the best dog names that start with an ‘O’. You might have found the perfect name for your dog. You might not. But there’s plenty here to inspire you to find the perfect name. Whether your dog is a boy, a girl, or a bit odd, these names might help point you in the right direction.

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Celestine Gomez

I'm Celestine Gomez, worked for 5 years in an animal shelter in Los Angeles, California. Having noticed the inherent passion and zeal in me to care for pets, I took a step further to create a team of I and like-minded individuals to provide an informative resource in order to broaden the knowledge base of a regular pet owners.