Here is a carefully selected list of 35 unique baby boy names starting with the letter “O,” along with their meanings and origins. These names are drawn from various cultures and carry profound meanings.
Nature-Inspired Baby Boy Names That Start with O
Oak (English)
Ocean (Greek)
Orion (Greek)
Onyx (Greek)
Olivier (French)
Omar (Arabic)
Otis (German)
Owen (Welsh)
Oakley (English)
Oceano (Italian)
Otter (English)
Oxlund (Old Norse)
Oberon (Shakespearean)
Ozzy (English)
Orson (Latin)
Odin (Norse)
Ocelot (Spanish)
Oslo (Norwegian)
Oswin (Old English)
Ogle (English)
Opal (Latin)
Ox (English)
Omarion (Arabic)
Otavio (Italian)
Orville (French)
Oskar (Scandinavian)
Omari (Swahili)
Oden (German)
Onyx (Greek)
Omair (Arabic)
Outlaw (English)
Oberyn (Latin)
Ophelio (Greek)
Oris (Latin)
Orvin (Old Norse)
Ophelian (Greek)
Orwell (English)
Olaf (Scandinavian)
Osiris (Egyptian)
Orestes (Greek)
Oakman (English)
Olwen (Welsh)
Oni (Japanese)
Ocelot (Spanish)
Olek (Polish)
Oz (Hebrew)
Otmar (German)
Oren (Hebrew)
Orin (Irish)
Omri (Hebrew)
Short and Sweet Baby Boy Names That Start with O
Omar (Arabic)
Owen (Welsh)
Oscar (Old Norse)
Odin (Norse)
Olivier (French)
Otis (German)
Omarion (Arabic)
Onyx (Greek)
Oren (Hebrew)
Oslo (Norwegian)
Omaru (Japanese)
Ozzy (English)
Odin (Norse)
Ollie (English)
Olivier (French)
Oryan (Hebrew)
Oren (Hebrew)
Oakes (English)
Orin (Irish)
Omri (Hebrew)
Otto (German)
Omaro (Arabic)
Orson (Latin)
Owen (Welsh)
Oz (Hebrew)
Olivio (Spanish)
Olin (Scandinavian)
Orio (Spanish)
Odell (English)
Omaro (Arabic)
Olivier (French)
Ozan (Turkish)
Oswin (Old English)
Olaf (Scandinavian)
Onur (Turkish)
Ollivander (English)
Orenzo (Hebrew)
Orfeas (Greek)
Omran (Arabic)
Opal (Latin)
Orson (Old French)
Otmar (German)
Ovi (Indian)
Odhran (Irish)
Odel (English)
Omari (Swahili)
Orenzo (Hebrew)
Omair (Arabic)
Omaru (Japanese)
Olun (African)
Classic & Trendy Baby Boy Names That Start with O
Owen (Welsh)
Oscar (Old Norse)
Oliver (Latin)
Otis (German)
Omar (Arabic)
Orson (Latin)
Odin (Norse)
Otto (German)
Ollie (English)
Omarion (Arabic)
Oscar (Old Norse)
Onyx (Greek)
Olivier (French)
Odin (Norse)
Oren (Hebrew)
Omari (Swahili)
Orville (French)
Oslo (Norwegian)
Orin (Irish)
Omri (Hebrew)
Ozzy (English)
Oakley (English)
Omaru (Japanese)
Oakes (English)
Osiris (Egyptian)
Olaf (Scandinavian)
Opal (Latin)
Owen (Welsh)
Olwen (Welsh)
Orlando (Italian)
Olivier (French)
Oberon (Shakespearean)
Odell (English)
Oswin (Old English)
Otavio (Italian)
Ollivander (English)
Osman (Turkish)
Oziel (Hebrew)
Orlando (Italian)
Ozias (Greek)
Ophelian (Greek)
Orenzo (Hebrew)
Olek (Polish)
Omran (Arabic)
Orville (French)
Orin (Irish)
Orion (Greek)
Ophelio (Greek)
Olson (Swedish)
Oakes (English)
Mythological Baby Boy Names That Start with O
Orion (Greek)
Odin (Norse)
Osiris (Egyptian)
Odysseus (Greek)
Orpheus (Greek)
Orestes (Greek)
Oswin (Old English)
Oberon (Shakespearean)
Oberon (Celtic)
Okeanos (Greek)
Olympius (Greek)
Omoikane (Japanese)
Omaru (Japanese)
Omri (Hebrew)
Orcus (Roman)
Olwen (Welsh)
Olo (Polynesian)
Oberyn (Latin)
Orestis (Greek)
Oinone (Greek)
Omen (Latin)
Onyx (Greek)
Oslo (Norwegian)
Ophion (Greek)
Olrik (Danish)
Oisin (Irish)
Orel (Hebrew)
Orodreth (Welsh)
Omarion (Arabic)
Osman (Turkish)
Orpheo (Greek)
Olan (African)
Omri (Hebrew)
Obadiah (Hebrew)
Ostar (Slavic)
Orionis (Greek)
Oedipus (Greek)
Ollie (English)
Orest (Greek)
Omar (Arabic)
Osric (Anglo-Saxon)
Oren (Hebrew)
Olivier (French)
Ophelian (Greek)
Oberland (German)
Othello (Italian)
Osgood (Anglo-Saxon)
Oktavius (Latin)
Ollivander (English)
Oris (Greek)
International Baby Boy Names That Start with O
Omar (Arabic)
Oscar (Old Norse)
Omarion (Arabic)
Olivier (French)
Otto (German)
Owen (Welsh)
Orion (Greek)
Odin (Norse)
Omaru (Japanese)
Otis (German)
Olivio (Spanish)
Omaro (Arabic)
Omari (Swahili)
Onyx (Greek)
Oslo (Norwegian)
Olaf (Scandinavian)
Oren (Hebrew)
Osiris (Egyptian)
Odin (Norse)
Orville (French)
Olivier (French)
Olafur (Icelandic)
Osman (Turkish)
Ollie (English)
Orin (Irish)
Ozzy (English)
Okan (Turkish)
Ozel (Hebrew)
Osman (Turkish)
Omran (Arabic)
Orestes (Greek)
Otavio (Italian)
Orson (Latin)
Omer (Turkish)
Othman (Arabic)
Oswin (Old English)
Obed (Hebrew)
Orenzo (Hebrew)
Octavio (Spanish)
Omarion (Latin)
Oles (Ukrainian)
Orel (Hebrew)
Oran (Irish)
Osvaldo (Spanish)
Odhran (Irish)
Olivier (French)
Osei (Ghanaian)
Orlan (French)
Olan (African)
Omri (Hebrew)
Vintage Baby Boy Names That Start with O
Oscar (Old Norse)
Oliver (Latin)
Owen (Welsh)
Otis (German)
Omar (Arabic)
Orson (Latin)
Odin (Norse)
Otto (German)
Ollie (English)
Orville (French)
Oscarson (Scandinavian)
Omarion (Arabic)
Oren (Hebrew)
Omri (Hebrew)
Orson (Latin)
Oakes (English)
Orville (French)
Ollivander (English)
Olen (Greek)
Ollie (English)
Ollivander (English)
Oswin (Old English)
Orlin (Slavic)
Oden (German)
Obadiah (Hebrew)
Olenzo (Hebrew)
Onslow (English)
Ollivier (French)
Ophelio (Greek)
Orestes (Greek)
Octavio (Spanish)
Owenby (Welsh)
Ogle (English)
Osborne (Old English)
Olivier (French)
Octavian (Latin)
Orin (Irish)
Otis (German)
Orenzo (Hebrew)
Olivian (Latin)
Osmond (Old English)
Otho (Latin)
Orson (Old French)
Olaf (Scandinavian)
Obadias (Hebrew)
Opie (English)
Oren (Hebrew)
Orville (French)
Odin (Norse)
Onan (Hebrew)
Biblical Baby Boy Names That Start with O
Omar (Hebrew)
Obadiah (Hebrew)
Othniel (Hebrew)
Onesimus (Greek)
Omri (Hebrew)
Oron (Hebrew)
Ozel (Hebrew)
Oren (Hebrew)
Ophir (Hebrew)
Oded (Hebrew)
Obed (Hebrew)
Omarion (Hebrew)
Othman (Arabic)
Oliel (Hebrew)
Oza (Hebrew)
Othello (Hebrew)
Orim (Hebrew)
Ozias (Greek)
Ozaiah (Hebrew)
Ohem (Hebrew)
Orpheus (Greek)
Orenzo (Hebrew)
Oris (Hebrew)
Olaf (Scandinavian)
Obadias (Hebrew)
Ofer (Hebrew)
Oshea (Hebrew)
Olivet (Hebrew)
Orrin (Hebrew)
Obiel (Hebrew)
Ozaiah (Hebrew)
Othiel (Hebrew)
Ornan (Hebrew)
Olemu (Hebrew)
Orrin (Hebrew)
Ozel (Hebrew)
Oz (Hebrew)
Osmond (Hebrew)
Omran (Arabic)
Oluwaseun (Yoruba)
Orlan (Hebrew)
Ona (Hebrew)
Oham (Hebrew)
Oran (Hebrew)
Omer (Hebrew)
Orestes (Greek)
Ophelian (Hebrew)
Orin (Hebrew)
Ovidia (Latin)
Ophrah (Hebrew)
Color or Gem-Inspired Baby Boy Names That Start with O
Onyx (Greek)
Opal (Latin)
Olive (Latin)
Olivier (French)
Obsidian (Latin)
Orion (Greek)
Oberon (Shakespearean)
Oren (Hebrew)
Olivio (Spanish)
Omar (Arabic)
Owen (Welsh)
Omari (Swahili)
Opelio (Greek)
Okeanos (Greek)
Otis (German)
Opaline (French)
Ophelian (Greek)
Oberlin (German)
Onyxus (Greek)
Orenzo (Hebrew)
Olwen (Welsh)
Olivian (Latin)
Olmo (Spanish)
Oculus (Latin)
Orla (Irish)
Obrian (Irish)
Orionis (Greek)
Orphee (French)
Octavio (Spanish)
Obie (English)
Ornella (Italian)
Orin (Hebrew)
Otavio (Portuguese)
Orestes (Greek)
Olivier (French)
Olaf (Scandinavian)
Oryan (Hebrew)
Omal (Arabic)
Orson (Latin)
Ozzy (English)
Osman (Turkish)
Odell (English)
Orsini (Italian)
Osmond (Old English)
Omaru (Japanese)
Orazio (Italian)
Oles (Ukrainian)
Orinzo (Hebrew)
Ostin (Latin)
Osmar (Spanish)
These names starting with “O” bring forth a range of meanings, from strength and resilience to nature and peace. Many of them are deeply rooted in mythology and history, providing a timeless and powerful choice for a baby boy. Whether you seek a name that reflects leadership, wisdom, or connection to nature, this list offers something unique and meaningful.
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