- Olav Kobbervik
- Olav Mol
- Olav Poulsen
- Olav Stedje
- Olav T. Berg
- Olav Torgeir Kopland
- Olav Torgeir Kopsland
- Olav Undeland
- Olav Undeland
- Olav Werner
- Olav Werner
- Olav Øyland
- Olave Kindergarten
- Olavi Louhivuori
- Olavi Trio
- Olavi Uusivirta
- Olavi Uusivirta
- Olavi Vihra
- Olavi Virta
- Olavi Virta
- Olavo Alen Rodriguez
- Olavo Bilac
- Olavo De Sá
- Olavur Hatun
- Olavur Oster
- Olay Basoki
- Olbenz
- Ölberg Kinderchor
- Olbert Davis
- Ольчей
- olcott, ball
- Old
- Old 78's
- Old Abode
- Old Age Music
- Old Agency Singers
- Old and in the Way
- Old and New Dreams
- Old Avenue
- Old Baptist Church
- Old Basford
- Old Batteries
- Old Bay Céilí Band
- Old Bear Mountain
- Old Bear Stories
- Old Believers
- Old Black Kettle
- Old Blind Dogs
- Old Bombs
- Old Boy
- Old Boy Network
- Old Bricks
- Old Bull & Bush
- Old Bull Gaines
- Old Calf
- Old Californio
- Old Canes