- O.G. Spanish Fly
- OG Squints
- OG Stunna
- O.G. Stunner
- Og Style
- O.G. Swiffff
- OG Whoryde
- Oga Syndicate
- Oga Uda
- Ogabi
- Ogala Sioux Singers
- Ogam
- Ogamon
- Ogan Aydın
- Oganez
- 緒方恵美
- Ogava Khacuko
- Ogawa Kaya
- 小川知子
- OGB
- OGB.
- O.G.C
- O.G.C.
- OGC
- OGD
- Ogden Edsl
- Ogden Harless
- Ogden Nash
- Ogden Nash
- Ogeday
- Ogemabenez
- Ogeng Wang Ayo
- O.Genius
- Ogenki Clinic
- Öggg
- Oggie
- Ogi
- Ogi G Cash
- Ogi Gee
- Ogi Gee Cash
- Ogi Radiovojevic
- Ogie
- Ogie Alcasid
- Ogimi Gen
- Ogk
- Oglala Sioux Singers
- Ogli G.
- Oglio Records Presents
- Oglu M.
- OGM
- OGM Music
- Ogün Sanlısoy
- O.G.Nation
- Ognir and the Night People
- Ognyan Fetov
- Ognyan Vasile
- Ognyan Vassiliev
- OGOGO
- Ogom
- Ogre
- Ogre
- Ogres de Barback
- O'Grime
- Ogris Debris
- Oguinye
- Ogun
- Ogun
- Ogun Celik
- Ogün Sanlisoy
- 小倉優子
- Ogurusu Norihide
- Oguta Bobo
- Oguz Aksaç
- Oguz Boran
- Oğuz Büyükberber
- Ogwang K
- Ogwang Lelo Okoth
- oh.
- Oh Astro
- Oh Astro
- Oh, Be Clever
- oh black choochie
- Oh Bonic
- Oh Brothers
- Oh! California