Here you'll find the 76 best masculine first names that start with the letter O – modern, unique or classic, and from all over the world. Click on a name to see its origin, meaning, pronunciation, variants and statistical popularity.
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Boy names with O
- Oberon
- Obi
- Oakley
- Ocean
- Octavius
- Ocke
- Odin
- Octavian
- Odis
- Odinn
- Oihan
- Odo
- Odysseus
- Oke
- Okko
- Oisín
- Oki
- Oktavian
- Oisin
- Olaf
- Ola
- Ole
- Okke
- Olav
- Oleg
- Oli
- Olf
- Olek
- Oliver
- Olivier
- Oliviero
- Olivér
- Olin
- Olle
- Oliverio
- Olli
- Olliver
- Ollin
- Ollie
- Olusola – God makes wealth
- Omar
- Olufemi
- Ondrej
- Omid
- Ommo
- Onni
- Onno
- Onyx
- Orell
- Olly
- Orest
- Orion
- Oren – Pine Tree
- Oriole
- Orson
- Orlando
- Osborn
- Osbourne
- Oscar – God's spear
- Oskar – God's spear
- Osborne
- Osman
- Osvaldo
- Osgar
- Otis
- Oswald
- Ottfried
- Ottar
- Otto
- Owain
- Owe
- Owen
- Ove
- Owenn
- Ozzy
- Ozzie
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