- Slap Sally Combo -- Slaphappy
- Slap'n'Tickle -- Slappin' Mammys
- Slapping Suspenders -- Slapshot
- Slapstick -- Slartibartfass
- Slartybartfast -- Slash Orchestra
- Slash Puppet -- Slash's Snakepit
- Slashtipher J. Coleman -- Slate
- Slate Stone -- Slater & Shellans
- Slater Thorpe -- Slaughter
- Slaughter -- Slaughter-Man
- Slaughter Mob -- Slaughterhouse 4
- Slaughterhouse 5 -- Slaughtermouse
- Slauter Xstroyes -- Slava Ardachev
- Slava Egorovic Kemlil -- Slava Grigoryan
- Slava Guyvoronsky -- Slava Ranko
- Slavaki -- Slave
- Slave -- Slave Master
- Slave Raider -- Slave to the System
- Slave Traitor -- Slavemachine
- Slaven Kolak -- Slaves (Gothic)
- Slaves of New Brunswick -- Slaviansky Lik
- Slavic Soul Party! -- Slavik Bosin
- Slavik Kemmler -- Slavko Avsenik
- Slavko Avsenik & Original Oberkrainer -- Slavonian Traveling Band
- Slavonic Cappella Ensemble -- Slavyanka
- Slavyanka Men's Chorus -- Slawek Wierzcholski
- Slawek Wierzchowski -- Slawterhaus