Dog Names That Start With O

Opal is on the verge of a repolishing, following other jewel names like Ruby and Pearl. A Top 100 name during the first two decades of the twentieth century, the opalescent Opal has a good chance of coming back as another O-initial option.

Oriana is a dashing medieval name, with a meaning similar to Aurora. At this point, though, Oriana is much more unusual than Aurora and makes a unique choice if you're searching for names that mean new beginnings or dawn.

Osiris is the name of Egyptian mythology god-king who died and was reborn every year. Emerging from centuries of obscurity, Osiris has several ingredients for success in the modern world: Roots in ancient myth, an uplifting meaning, an s ending and the cute nickname Os or Oz.

A calm and gentle multicultural choice. Oran is popular in Ireland, where its Gaelic form is Odhrán, meaning "little green one". In Scottish Gaelic, the name means "song", and in Hebrew, it's a combination of Or "light" + Ran "singing".

Orlando, the ornate Italianate twist on the dated Roland, with a literary heritage stretching back to Shakespeare and before, has appealing book-ended o's, and is open to combination with almost any last name, a la British actor, Orlando Bloom.

Oisin is one of the most popular Irish baby names in its native land, though largely unknown in the US. The original Oisin was the mythological son of Finn McCool and Sadb, the goddess who was changed into a deer. A legendary war hero and poet, Oisin had a name that is also reminiscent in sound of the ocean. Pronounced correctly, this name has an attractive sheen.

Cute but cool, fresh but familiar, Ozzy was one of the fastest-rising boy names of 2021 and has continued to rise in the US and the UK ever since. While hard-core rocker Ozzy Osbourne might not be everyone's idea of a role model, his nickname name, along with others like it (think Iggy, Ziggy and Izzy) are forging their own way up the charts.

With its relation to Mount Olympus, home of the Greek gods, and to the Olympic games, this name has an athletic, goddess-like aura, making it the perfect Olivia substitute.

Name of the legendary ancient Greek poet and musician — whose music was so beautiful it made trees dance and rivers stop to listen — would provide a child with a challenging but indelible identity.

Nature names like Ocean and River are flowing back into favor, especially with nature lovers and green-oriented parents.

Friendly but substantial.

Oslo, the capital city of Norway, makes for an intriguing new place name, especially with its bookended O's, as in Otto. One Berry has already used it and we predict others will follow.

The name of the brave, resourceful hero of Homer's epic saga has almost always been considered too weighty for a child to bear, but at this point, some brave, resourceful parents out there might be willing to take it on.

Oak, a symbol of solidity, strength, and longevity, is joining Cedar and Pine as a viable name, one that would work especially well in the middle.

Oakley, with its nature name roots and its Annie Oakley charm, is a hot name for both genders but more than twice as popular for girls. This name made it into the Top 1000 for the first time in 2013, one of only four girl names starting with O to rank that high. A decade letter, it's aiming for the Top 100.

This old-timey nickname for Otis and Odell is strongly tied to Garfield’s canine companion in the Garfield comic, movie, and TV franchise.

This may be a legitimate Hebrew name denoting power, but to any American kid, it will evoke ruby slippers and a yellow brick road. The full Hebrew name is Ozni, who was a grandson of Jacob in the Bible.

Octavius, which was at one time used for the eighth child in a family, has the worn leather patina of all the ancient Roman names now up for reconsideration. As a Roman family name, it derives from the uncommon forename Octavus, which designated an eighth son.

More and more frequently heard as the Gallic version of Oliver, Olivier could be seen as a tribute to the great British actor, Sir Laurence O.

This Slavic form of the Norse name Helga is a classic in many Slavic countries, including Russia and Poland, where it currently ranks within the Top 100 girl names. It has historically ranked among the most popular names in countries including Ukraine, Latvia, Spain, France, Serbia, Greece, the US, and many more. Olga is a common name even in Scandinavian countries, such as Sweden and Norway, despite Helga being a more traditional choice. Olha is the uniquely Ukrainian variation.