400+ Horse Names That Start With O

Choosing the perfect name for your equine companion can be a delightful yet challenging task. Whether you’re naming a new foal, a newly acquired horse, or looking for inspiration for your fictional equine character.

This comprehensive list of over 400 horse names that start with O is sure to provide you with plenty of options.

From famous racehorses to cute and funny monikers, we’ve got you covered with a wide array of choices to suit every horse’s personality and your personal preferences.

Famous Horse Names That Start With O

Omaha – Winner of the 1935 Triple Crown
Octagonal – Australian Racing Hall of Fame inductee
Ouija Board – Multiple Group 1 winning mare
Ormonde – Undefeated British racehorse
Orfevre – Japanese thoroughbred champion
One For Arthur – 2017 Grand National winner
Officer – American Grade 1 stakes winner
Oaklawn Warrior – Notable American racehorse
Octave – Multiple Grade 1 winning filly
Olympiad – American Grade 1 winner
Oasis Dream – British Group 1 winner and successful sire
Oratorio – Irish-trained Group 1 winner
Orchestrated – Canadian Horse Racing Hall of Fame inductee
Oxbow – 2013 Preakness Stakes winner
Ocean Knight – Graded stakes winner
Ogygian – American Grade 1 winner
Outstrip – Breeders’ Cup Juvenile Turf winner
Oscar Performance – Multiple Grade 1 winner on turf
Optimus Prime – Named after the Transformers character
Overbury – British Group 1 winner
Olden Times – European champion miler
Oiseau de Feu – French Group 1 winner
Our Emblem – Sire of Kentucky Derby winner War Emblem
Owl – 1960s American stakes winner
Oz the Terrier – Australian Group 1 winner
Overskate – Canadian Horse of the Year
Owendale – Multiple graded stakes winner
Osunitas – California-bred stakes winner
Old Rosebud – 1914 Kentucky Derby winner
Orientate – Breeders’ Cup Sprint winner
Oguri Cap – Japanese champion racehorse
Orpen – Irish Group 1 winner
Omnium II – French classic winner
Orange Bay – Japanese Group 1 winner
Oasis Star – South African Group 1 winner
Omar Khayyam – 1917 Kentucky Derby winner
Ocean Silk – Irish-trained Group winner
Otaki Chief – New Zealand champion
Okawango – French Group 1 winner
Outback Barbie – Australian Group winner
Order Of St George – Irish St. Leger winner
Overanalyze – Arkansas Derby winner
Oxalic – Australian Group 1 winner
Owendale – Multiple graded stakes winner
Origami Angel – Japanese Group winner
Opportunity – British Group winner
Ostilio – British Group 2 winner
Oscar Schindler – Irish St. Leger winner
Obrigado – French-bred stakes winner
Outlook – British Group 3 winner

Female Horse (Mares) Names That Start With O

Olivia – Derived from “olive,” symbolizing peace
Ophelia – Shakespearean character name meaning “help”
Onyx – Black gemstone, perfect for a dark-colored mare
Opal – Iridescent gemstone name
Orchid – Elegant flower name
Oceana – Relating to the ocean
Olympia – Associated with Mount Olympus and Greek mythology
Odette – French name meaning “wealthy”
Oonagh – Irish name meaning “lamb”
Oasis – A fertile spot in a desert
Octavia – Latin name meaning “eighth”
Ohana – Hawaiian word for “family”
Oksana – Ukrainian name meaning “praise be to God”
Omega – The last letter of the Greek alphabet
Ondine – Water nymph in mythology
Onora – Irish name meaning “honor”
Opal Moon – Combining gemstone and celestial themes
Oracle – A person or thing providing wise counsel
Oriole – Colorful bird species
Osanna – Hebrew name meaning “save us”
Ottilie – German name meaning “prosperous in battle”
Ozara – African name meaning “pearl”
Oak Leaf – Nature-inspired name
Oberon’s Queen – Reference to Shakespeare’s “A Midsummer Night’s Dream”
Obsidian – Volcanic glass, suitable for a sleek black mare
Ocean Breeze – Evocative of coastal scenery
Odessa – Ukrainian city name
Okapi – Exotic African animal
Oleander – Flowering shrub (note: toxic to horses)
Olive Branch – Symbol of peace
Omega Rose – Combining Greek and floral themes
Opal Dawn – Gemstone and time of day combination
Opera Diva – For a mare with a loud neigh
Opulence – Suggesting luxury and wealth
Orange Blossom – Fragrant flower name
Orchid Mist – Combining flower and weather themes
Oriental Pearl – Exotic-sounding name
Ostara – Germanic goddess of spring
Oyster Pearl – Oceanic treasure-inspired name
Ozella – Hebrew name meaning “God is my strength”
Ozone – Atmospheric layer name
Otter Creek – Nature-inspired name
Outback Rose – Australian-themed name
Owl Eyes – For a mare with large, expressive eyes
Oxalis – Genus of wood sorrel plants
Oxygen – Essential element for life
Ozark Sunrise – Inspired by the Ozark Mountains
Oolong – Type of tea, for a warm-colored mare
Orinoco – South American river name
Owyhee – After the Owyhee Desert

Male Horse Names That Start With O

Odysseus – Greek mythological hero
Oberon – King of the fairies in Shakespeare’s works
Onyx Knight – Combining gemstone and chivalric themes
Orion – Constellation and hunter from Greek mythology
Oscar – Means “deer lover” or “champion warrior”
Odin – Norse god of wisdom and war
Osiris – Egyptian god of the afterlife
Octavius – Latin name meaning “eighth”
Oz – Fictional land or abbreviation for ounce
Oakley – English name meaning “meadow of oak trees”
Obadiah – Hebrew name meaning “servant of God”
Obsidian Flame – Combining volcanic glass and fire themes
Ocean Storm – Powerful nature-inspired name
Ocelot – Wild cat species
Ogma – Irish god of eloquence and learning
Oliver – Derived from “olive tree,” symbolizing fruitfulness and beauty
Omega Wolf – Combining Greek letter and wild animal themes
Onomatopoeia – For a horse that makes distinctive sounds
Opus – Musical composition or literary work
Oracle Bones – Ancient Chinese divination tools
Orbit – Celestial path of a planet or satellite
Orca – Another name for killer whale
Orwell – After the famous author George Orwell
Othello – Shakespearean character name
Outlaw – For a horse with a rebellious spirit
Overdrive – Suggesting speed and power
Oxbow – U-shaped bend in a river
Ozymandias – Ancient Egyptian king, subject of a famous poem
Obelisk – Tall, four-sided monument
Oblivion – State of being unaware or forgotten
Occam – After Occam’s Razor principle
Oceanus – Greek Titan god of the sea
Octane – Component of gasoline, suggesting high energy
Oengus – Irish god of love and youth
Ogre – Mythical monster, for a large and imposing horse
Ohm – Unit of electrical resistance
Omen
Onager – Asiatic wild ass
Opus Magnus – “Great work” in Latin
Oracle Sun – Combining prophetic and celestial themes
Ordo – Latin for “order” or “rank”
Ore – Naturally occurring solid material
Ossian – Legendary Irish warrior and bard
Otis – German name meaning “wealthy”
Outrider – Escort for racehorses
Overture – Opening movement of a musical composition
Oxus – Ancient name for the Amu Darya river
Ozark – Mountain range in the United States
Ozone Rider – Environmental-themed name
Ozzy – Diminutive of Oswald, meaning “divine power”

Funny Horse Names That Start With O

Oats McGoats – Playful reference to a horse’s diet
Old Glue – Humorous nod to the old horse glue myth
One Trick Pony – Ironic name for a versatile horse
Opt-Out-asaurus – For a stubborn horse who refuses to cooperate
Oreo Speedwagon – Pun on the band REO Speedwagon
Ostentatious – For a horse with a flair for the dramatic
Out To Lunch – For a spacey or easily distracted horse
Over-Neigh-tor – Pun on “overnighter” for a vocal horse
Odor Eater – Humorous name for a less fragrant stable mate
Oh Behave – Austin Powers reference for a mischievous horse
Olé Mole – Spanish exclamation mixed with a burrowing animal
Omelet du Fromage – French phrase meaning “cheese omelet”
On The Rocks – Cocktail reference for a clumsy horse
One Man Band – For a horse that makes a lot of noise
Onion Ring Leader – Fast food-inspired name for a boss horse
Oodles of Noodles – Pasta-themed name for a curly-maned horse
Oops I Did It Again – Britney Spears song title for an accident-prone horse
Opera-tunity – Pun on “opportunity” for a loud horse
Optimist Prime – Play on Transformers character for a cheerful horse
Orange You Glad – Pun on the knock-knock joke
Oscillate Wildly – The Smiths song title, for a horse that can’t stand still
Ostrich Jockey – Absurd name for a tall, long-necked horse
Otter This World – Pun on “out of this world” with an aquatic twist
Overdraft – Banking term for a horse that eats too much
Owie Wowie – Childish expression of pain for a clumsy horse
Ox-y Clean – Pun on OxiClean for a neat freak horse
Oyster Cracker – Snack food name for a small, pale horse
Ozzy Osbourse – Pun on Ozzy Osbourne for a wild horse
Obi-Wan Cannoli – Star Wars and Italian pastry mashup
Obtuse Spruce – For a not-so-bright horse
Octo-pony – Imaginary eight-legged horse
Odd Job – James Bond character name for a quirky horse
Off-Key Donkey – For a horse with a terrible whinny
Ogre Achiever – Pun on “overachiever” for a large, successful horse
Oh My Gourd – Pumpkin-themed exclamation
Oink Oink Neigh – Confused farm animal sounds
Olfactory Factory – For a horse with a keen sense of smell
Olive Or Twist – Cocktail garnish pun on Oliver Twist
Omni-corn – Play on “omnivore” and “unicorn”
One Horse Open Sleigh – Christmas song reference
Onion Breath – For a horse with less-than-fresh breath
Oompa Loompa – Willy Wonka character for a small, stocky horse
Oopsy Daisy – Childish expression for a clumsy horse
Orbit Gum – Chewing gum brand for a horse that chews everything
Organic Panic – For a horse that only eats organic feed
Origami Tsunami – Japanese art form and natural disaster combo
Ornery Corner – For a grumpy horse always standing in the corner
Oscillating Fan – For a horse that constantly turns its head
Ouija Broad – Pun on Ouija board for a “psychic” mare
Oy Vey Neigh – Yiddish expression combined with a horse sound

Unique Horse Names That Start With O

Obsidian Whisper – Evocative of dark, smooth stone and quiet strength
Oleander Mist – Combining the poisonous plant with an air of mystery
Oneiromancer – One who divines through dreams
Opalescent Fury – Suggesting iridescent colors and intense energy
Orphic Resonance – Relating to Orpheus and his mystical music
Ossuary Enigma – Mysterious bone repository
Ouroboros – Ancient symbol of a serpent eating its own tail
Oblivion’s Echo – Suggestive of forgotten memories resurfacing
Ochre Tempest – Earthy pigment combined with stormy imagery
Odalisque – A female slave or concubine in a Turkish harem
Oghma’s Quill – Named after the Irish god of eloquence and writing
Ominous Rhapsody – Foreboding yet musical name
Onomatopoeia – The formation of words that imitate sounds
Opalite Voyager – Combining the gemstone opalite with a sense of journey
Opus Nocturne – A nighttime masterpiece
Oracular Zephyr – Prophetic western wind
Osmium Dream – Named after the densest naturally occurring element
Ozone Epitaph – Atmospheric layer combined with a memorial inscription
Oblique Stratagem – An indirect plan or scheme
Occidental Reverie – A daydream of the Western world
Occulta Veritas – Hidden truth in Latin
Ode to Oblivion – A poetic tribute to forgetfulness
Olfactory Odyssey – A journey of scents
Ombre Serenade – A song of graduated colors
Omni Lumina – All lights in Latin
Oneiric Cartographer – A mapper of dreams
Opulent Dichotomy – Luxurious contradiction
Orbital Phantasm – A celestial illusion
Ossified Euphony – Hardened beautiful sound
Oubliette Whisperer – Named after a secret dungeon with access only from above
Obsidian Sonnet – A dark, poetic name
Ochre Labyrinth – Maze-like pattern in earthy pigments
Odium’s Antithesis – The opposite of hatred
Oenophile’s Reverie – A wine lover’s daydream
Olam Haba – “The world to come” in Hebrew
Ombré Soliloquy – A gradient-colored monologue
Omniscient Quasar – All-knowing celestial object
Onomatopoeic Osmosis – Sound-based gradual absorption
Opalescent Nebula – Iridescent cosmic cloud
Orphic Palindrome – Mystical word or phrase that reads the same backward
Oscillating Petrichor – Fluctuating scent of rain on dry earth
Osseous Luminescence – Glowing bones
Outre Phantasmagoria – Unusual, bizarre spectacle
Oberon’s Gambit – Strategic play named after the fairy king
Occam’s Melody – Simple, elegant tune
Odin’s Whisper – Subtle message from the Norse god
Oleander Zenith – Highest point of the poisonous flower
Ominous Serendipity – Foreboding fortunate discovery
Onyx Zephyr – Dark gemstone wind
Opulent Cipher – Luxurious secret code

Cute Horse Names That Start With O

Ollie – Short and sweet name
Oreo – For a black and white horse
Oatmeal – Soft, warm name reminiscent of a horse’s diet
Olive – Cute name with a touch of sophistication
Oscar the Grouch – For a horse with a grumpy but lovable personality
Oomph – For a horse with lots of energy
Otis – Charming, old-fashioned name
Ozzy – Playful, rock-inspired name
Oddball – For a quirky, unique horse
Oopsie Daisy – Charming name for a clumsy but lovable horse
Orbit – Cute space-themed name
Orville – Reminiscent of popcorn, sweet and light
Otter – Playful water animal name
Olaf – After the lovable snowman from Frozen
Octopus – Quirky name for a horse with long legs
Oni – Japanese for “demon,” but sounds cute
Okie Dokie – Cheerful, agreeable name
Oompa Loompa – For a small, stout horse
Orangina – Cute citrus-inspired name
Ostrich – For a tall, long-necked horse
Owl – For a wise-looking horse
Ozark – Cute mountain-inspired name
Oggy – Playful, cartoon-inspired name
Ohana – Hawaiian for “family”
Okra – Unusual vegetable name that sounds endearing
Ollie Ollie Oxen Free – Playful hide-and-seek phrase
Omelet – Cute breakfast-inspired name
Oopsy – For a horse prone to minor mishaps
Oregano – Herb name with a cute ring to it
Ori – Short for “original,” sounds sweet
Orion’s Belt – Celestial name with a touch of whimsy
Oswald – Old-fashioned name with a cute nickname “Ozzie”
Otter Pop – Frozen treat-inspired name
Ouija – Mysterious but cute-sounding name
Oven Mitt – Quirky kitchen item name
Oyster – For a small, pearly-colored horse
Ozzie Pozzie – Australian-inspired playful name
Oboe – Musical instrument with a cute sound
Octo – Short for octopus, sounds bouncy and fun
Odette – Elegant name from Swan Lake
Ogden – Old English name meaning “oak valley”
Olive Oyl – Popeye’s girlfriend, for a thin, tall horse
Ombré – For a horse with gradual color changes
Omelette du Fromage – Cheese omelette in French, sounds adorable
Onigiri – Japanese rice ball, cute food-inspired name
Oopsie Woopsie – Playful name for a clumsy horse
Orbit – Space-themed name with a cute sound
Oreo Blizzard – Ice cream treat-inspired name
Otus – Cute owl genus name
Ozzy Wozzy – Playful variation of Ozzy

Best Horse Names That Start With O

Odyssey – Epic journey-inspired name
Onyx Shadow – Sleek, mysterious name
Orion’s Arrow – Celestial hunter’s weapon
Ostentatious – For a showy, impressive horse
Oathkeeper – Noble, loyal name
Oberon’s Pride – Fairy king-inspired regal name
Oceanic Storm – Powerful, nature-inspired name
Olympus Rising – Majestic, deity-inspired name
Onward Bound – Forward-looking, determined name
Oracle’s Vision – Mystical, prophetic name
Obsidian Knight – Dark, chivalrous name
Odin’s Wisdom – Norse god-inspired name
Opulent Sunset – Rich, colorful name
Orbital Flame – Cosmic, fiery name
Osiris Reborn – Egyptian god of resurrection
Outlaw’s Legacy – Rebellious, heritage-inspired name
Overture – Musical beginning, fresh start
Ozymandias – Ancient king, powerful name
Oasis Mirage – Desert-inspired, illusory name
Oblivion’s Edge – Dramatic, boundary-pushing name
Occidental Star – Western celestial body
Oceanus Rex – King of the ocean
Odysseus’s Return – Homeric hero’s journey
Olymphic Gold – Victory-inspired name
Omni Potens – All-powerful in Latin
Oncoming Storm – Dramatic weather-inspired name
Opulent Destiny – Luxurious fate-inspired name
Oracular Sonnet – Prophetic poem-inspired name
Orbital Eclipse – Cosmic event-inspired name
Ostentatious Rex – Showy king
Otherworldly – Mysterious, ethereal name
Outrider’s Glory – Celebratory escort name
Overtaker – Competitive, race-inspired name
Oxbow’s Revenge – River bend-inspired dramatic name
Oxygen Blaze – Elemental, fiery name
Ozone Rider – Atmospheric, adventurous name
Obsidian Thunder – Dark stone and storm combination
Occidental Zephyr – Western wind
Octane Surge – High-energy, powerful name
Odinson – Son of Odin, Norse mythology-inspired
Omen’s Whisper – Subtle, prophetic name
Onyx Tempest – Dark gemstone storm
Opulent Warrior – Luxurious fighter
Orbital Sentinel – Celestial guardian
Osmium Flash – Dense element-inspired quick name
Ostrogoth – Ancient Germanic people-inspired name
Outlander’s Quest – Journey-inspired name
Overlay – Artistic, layered name
Ovation – Enthusiastic approval-inspired name
Oxfordian – Scholarly, prestigious name

Conclusion

This comprehensive list of over 400 horse names starting with O offers a wide variety of options for every type of horse and owner preference.

From the historically significant to the whimsically cute, there’s a perfect O name waiting for your equine companion.

Remember, the best name for your horse is one that resonates with you and suits your horse’s unique personality and characteristics. Happy naming!