- Snowpony -- So Kobayashi
- So Long -- S.O.B.
- SOB Creators -- Society
- Society 1 -- Soel Party
- Soemon -- Sofia Shinas
- Sofia Singers -- Softballetforms
- Softboiled Eggies -- Soileau Couzens
- Soiled -- Sol Gypsy
- Sol Harris -- Solange Sa
- Solanilla -- Solarphonics
- Solarscape -- Soledad Del Valle
- Soledad Giménez -- Solid Tarts
- Solid Trax -- Solo Career
- Solo Cipher -- Solomons World
- Solomun -- Soma
- Soma -- Somebody's Sister
- Someday -- Sometimes Paul
- Sometimes Seven -- Son del Canto
- Son del Centro -- Son Sangmi
- Son Seals -- Sondra Peters