Dog Names Starting With O

Still need a name for your pup? Here's a list of dog names beginning with O.

Tap the arrow to see a name's meaning, and the heart to save it to your shortlist.

OakNear the oak trees; meadow of oak trees.
OakleyFrom The Oak Tree Field
Oasisa shelter serving as a place of safety or sanctuary
ObaKing
OberonNoble Bear
OctaviaEighth
OdeA Lyric Poem
OdellFrom The Woad Hill
OdessaLong Journey
Odettemelodic
Odysseya Greek epic poem (attributed to Homer) describing the journey of Odysseus after the fall of Troy
OgdenFrom The Oak Valley
OighrigFertile, strong-willed woman.
OlgaHoly
OlinaJoy or happiness
Olindaprotector of property
OliveOlive Or From The Olive Tree
OliviaA detective from the show law and order svu
Ollaleaf or strip from a leaf of the talipot palm used in India for writing paper
OlympeOlympian
OlympiaAn ancient sanctuary site dedicated to the worship zeus in greek mythology
Olympusa mountain peak in northeast Greece near the Aegean coast; believed by ancient Greeks to be the dwelling place of the gods (9,570 feet high)
OmegaThe Greek Letter
Onpeace
OnyxBlack Gemstone
OopsUnexpected mistake/error.
OpalPrecious Gem
OpheliaHelper
Opheliehelp, aid
OpieLoving, endearing nickname.
OpisA divinity of plenty and fertility
Orabellagolden beauty
OracleA person who can communicate with the gods in Greek mythology
Orbitthe (usually elliptical) path described by one celestial body in its revolution about another
OreoBlack and white
Orinocoa South American river 1,500 miles long; flows into the South Atlantic
Oriol"Golden sun god"
OrionA giant huntsman in greek mythology.
OrlaGold Queen
OrlandaFamous female warrior.
OrlyYou Are My Light
Ornellaflowering ash tree
OroGold
OrobelleA combination of Spanish and French meaning beautiful
OrquideaOrchid Flower
Orsinabear
Orsolalittle bear
OsmiumA blue-gray or blue-black metallic element.
OsoBear in Spanish.
OtisWealth
OtsoWolf
Otterfreshwater carnivorous mammal having webbed and clawed feet and dark brown fur
Outkast"Different from the rest."
OveMythical Daughter Of Dearg
OwenThe Yew Tree Or Youth
OzzieStrong in hebrew.

Dog Names Starting With O currently rank in 102nd place out of all PupNames.com categories.

As of November 2026, dog names starting with o seem increasingly popular with new puppy owners. Our stats show that they are more fashionable than they were at this time last year.

We've seen quite a lot of variation for this category, which suggests its popularity could be seasonal or based on cultural events.

Which are the cutest and most unique Dog Names Starting With O?

These dog names starting with o range from cute to badass, and from traditional to unique. Click each circle to see the name.

Oliver is among the cutest of these. If you prefer tougher, edgier dog names, the one considered the most badass is Outkast.

Olinda scored high for its uniqueness, which would help your dog to stand out. But if you prefer more common, old-fashioned names, the more traditional option here is Oliver.

How does interest compare across the United States for Dog Names Starting With O?

The map below compares each state by the number of people browsing Dog Names Starting With O.

The states that love dog names starting with o the most are Idaho, New Jersey and Connecticut.

The least amount of interest in this category was registered in District of Columbia, Louisiana and Nebraska.

Which countries have the most love for Dog Names Starting With O?

Here's a world map showing the popularity in each country of dog names starting with o.

Who'd have thought?! Some of the countries you might not have thought about that LOVE dog names starting with o are Gabon, Rwanda and Isle of Man.

On the flip, PupNames data shows there's not much interest in Bangladesh, Israel and Vietnam.