Boy Cat Names That Start With O
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About this list
The names
Oliver
Germanic, Latin
"elf army; ancestor's relic; olive tree"
Oliver is an international star, ranking near the top of the charts throughout the English-speaking world and in a host of European and Latin American countries, from Norway to Chile, Slovenia to…
Oscar
English or Irish
"God spear, or deer-lover or champion warrior"
Oscar is one of the most stylish Old Man Names of our era. While it's softened slightly in popularity over the past 20 years, that may be considered a very good thing. In the nineties and the…
Otto
German
"wealthy"
Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers. Like most German names , Otto fell out of favor during and after the two…
Onyx
Word name
"gem stone; claw, nail"
Unlike Pearl and Ruby and more like Jasper, this gem name works well as a boys name. With its strong final X, it feels similar to Alex, Phoenix, Jax, and Rex, while the shiny black quality of the…
Oakley
English
"oak wood or clearing"
As sturdy as Oak, but with stronger roots as a first name, Oakley ticks lots of boxes for modern trends. With its unisex vibe, its nature-based meaning, its surname-y feel, and its popular -lee…
Ozzy
Pet form of Oswald, Osborn, Osmond or Oscar, English
"divine; deer"
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…
Otis
Variation of Otto, German
"wealthy"
Otis has real appeal for parents attracted to its catchy O initial and combination of strength and spunk. The appealing hero of the British TV show Sex Education has done much to propel Otis into the…
Ocean
English, nature name
"ocean"
Nature names like Ocean and River are flowing back into favor, especially with nature lovers and green-oriented parents. In 2024, it was given to 483 boys and 325 girls, making this a unisex favorite…
Orange
Fruit and color name
No babies of any gender were named Orange in the US in the most recent year counted. But that doesn't mean, in this era of anything-goes baby names, that it couldn't happen. In fact, Orange did…
Odie
Diminutive of Odell, Otis; English, German
"of the valley; wealthy"
This old-timey nickname for Otis and Odell is strongly tied to Garfield’s canine companion in the Garfield comic, movie, and TV franchise. Actress Ashley Williams gave it signs of life when she used…
Orson
Latin and English
"bear cub"
In the past, Orson has felt like a one-person moniker, tied to film director Orson Welles, who dropped his given name of George in favor of his more distinctive middle. While the Citizen Kane creator…
Ollie
Diminutive of Oliver, Latin
"olive tree"
Down-home nickname name once associated with the friendly dragon on kids' TV. As Oliver rises, we may well hear more Ollies.
Octavius
Latin
"eighth"
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…
Octave
French form of Octavius, Latin, or English word name
"eighth; musical and poetry term"
Octave shortens Octavius to a more manageable length, keeping the "eighth" meaning. In English speaking countries, however, people could easily confuse this with the musical and poetrry term octave .…
Osiris
Egyptian
"with strong eyesight"
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…
Orville
French
"gold town"
Only if you're an aviation buff or seriously addicted to popcorn.
Obie
Obie has multiple origins, functioning as both a standalone name and a nickname. It emerged as a traditional diminutive for names like Obadiah, a Hebrew biblical name meaning 'servant of God.' It's…
Obsidian
English word name
This rarely used boys name is one of the few gem names for a boy. Obsidian is actually a type of volcanic glass, formed when lava cools very quickly. This ultra-cool name might spark a love of…
Oriole
Latin
"golden"
A bird name from the same Latin root as Aurelio.
Odysseus
Greek mythology name
"wrathful"
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…
