Nickname with O
Used as a cute nickname, esp. for Olivia
Common short for Oliver/Olivia
Familiar nickname (e.g., for Oswald/Osborne)
Friendly short form of Oliver/Olivia
Well-known nickname, same as Ozzy variant
Recognized nickname (think TV character Opie)
Casual spelling of the nickname Ollie
Alternate spelling of Ollie; still a nickname
- Olaf
- Osito
- old man
- Oma
- Otter
- Oso
- Omi
- Otis
- Ola
- Opa
- Ogre
- oreo
- Odie
- Opal
- Ori
- Obi
- Orlando
- Obie
- Oddball
- Oni
- Oppie
- oggy
- Olga
- Oppa
- octopus
- oprah
- opi
- Old man
- oompa loompa
- Oliv
- Orly
- Orion
- Oppy
- Oak
- Owl
- Ona
- Ole
- Old fart
- Ovi
- Onion
- Oggie
- Octo
- Oldy
- Old lady
- Owie
- Ottie
- Omega
- Old Sport
- oslo
- Ophelia
- oops
- OMG
- Old boy
- Oddy
- Oswald
- Oscar the Grouch
- oman
- Oddie
- Otty
- ossy
- Ossie
- Ossi
- Okie
- osvaldo
- Osky
- Orange man
- Ora
- Odin
- Odd
- Oaf
- Osi
- one and only
- oger
- Ody
- ocean
- Oily
- Odi
- Odd ball
A Nickname with O listán szereplő szavak a Ország Város szójáték játékosaitól származnak.