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
• ObiHeart
• Obi-WanObi-Wan Kenobi, a force-sensitive Jedi Master in Star Wars.
• OblomovA sloth.
• OchoaUS astronaut.
• OctaviaEighth
• OdeA Lyric Poem
• OdellFrom The Woad Hill

• OdessaLong Journey
• Odettemelodic
• OdieLovable, loyal companion.
• OdinThe god of wisdom, poetry, death, divination and magic in norse mythology.
• OdysseusA legendary hero in greek mythology.
• Odysseya Greek epic poem (attributed to Homer) describing the journey of Odysseus after the fall of Troy
• O.G.Original Gangster (or Original)
• Ogbo"God's blessing" (or "Divine blessing")
• OgdenFrom The Oak Valley
• OighrigFertile, strong-willed woman.
• OlafAncestor's Heir
• OlanderIntelligent on Swedish.

• Old YellerLoyal, brave, dog.
• OleeHappy moment
• Oleosa spread made chiefly from vegetable oils and used as a substitute for butter
• OlgaHoly
• OlinaJoy or happiness
• Olindaprotector of property
• OliveOlive Or From The Olive Tree
• OliverDescendant Of The Ancestor
• OliviaA detective from the show law and order svu
• OlivierElf Warrior Or Ancestor's Descendant
• Ollaleaf or strip from a leaf of the talipot palm used in India for writing paper
• OlleDescendent

• OllieElf Army
• 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)
• OmarLong Life, Popular, Flourishing
• OmegaThe Greek Letter
• Onpeace
• OnniHappy
• OnyxBlack Gemstone
• OopsUnexpected mistake/error.
• OpalPrecious Gem
• OpethAn ancient festival in Egyptian mythology.

• 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
• OrcusA god of the underworld who punished broken oaths
• OreoBlack and white
• Oresitrophosmountaineer
• Oribasosmountain ranger
• OrienThe Orient, East

• OringoHe Who Likes The Hunt
• 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.
• OrlandoFrom Glorious Land
• OrlyYou Are My Light
• Ornellaflowering ash tree
• OroGold
• OrobelleA combination of Spanish and French meaning beautiful
• OrquideaOrchid Flower

• Orsinabear
• Orsolalittle bear
• OrsonBear Cub
• OrvilleA name commonly associated with a grumpy old man
• Osamudisciplined, studious
• OsbornGod Bear
• OscarDeer Lover
• OsheHappy
• OsirisLord of the Underworld and judge of the dead in Egyptian mythology.
• OsitoTeddy bear; little bear.
• OsmiumA blue-gray or blue-black metallic element.
• OsoBear in Spanish.

• OswaldGod Rule
• OthelloOf Unknown Meaning
• OtisWealth
• OtsoWolf
• Otterfreshwater carnivorous mammal having webbed and clawed feet and dark brown fur
• OttoProsperous, rich
• Outkast"Different from the rest."
• OveMythical Daughter Of Dearg
• OvertonFrom The Riverbank Town
• Ovidiosheepherder
• OwenThe Yew Tree Or Youth
• OxfordFrom The Oak Valley

• OzzieStrong in hebrew.
• OzzyDivine spear

Dog Names Starting With O currently rank in 104th place out of all PupNames.com categories.

As of October 2026, dog names starting with o are trending down with new puppy owners. Our stats suggest that they are less 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.