- 3 Pill Morning
- 3 Point Landing
- 3 Quarters Dead
- 3 Steps Ahead (Peter-Paul Pigmans)
- 3 Sud Est (Romanian dance music group)
- 3 Wheeler Band
- 3 Winans Brothers
- 3 Winans Brothers feat. Clark Sisters, The
- 3 Years Hollow
- 3 Years Hollow feat. Lowery, Clint
- 3-11 Porter
- 3-2 Get Funky
- 3-D (Ralph D'Agostino, Tommy Musto & Tommy Sozzi)
- 3-O-Matic
- 3-Way Playaz
- 3. Generation, Die
- 3.2 (progressive rock project)
- 3*D (house artist, released Georgy Porgy)
- 3+2 (hungarian band)
- 30 Amp Fuse
- 30 Deep Grimeyy
- 30 is Dead (NC/PA punk)
- 30 Odd Foot of Grunts
- 30/70
- 3000m
- 3010
- 3030 (Brazilian band)
- 303s, The
- 30footFALL
- 30Y
- 31 Minutos
- 3108
- 310babii
- 311
- 313 (groupe de rap français)
- 313 feat. Jadanaë
- 315 STARS
- 31Knots
- 31st of February, The
- 32 Below
- 32 Leaves
- 321 (UK hip-hop)
- 32after
- 32CRASH (Belgian electropunk trio)
- 32Stiches & Hoober
- 32Stitches
- 33 DC
- 33 Dogs
- 33 Lovers
- 33 West
- 33, La
- 330ml
- 33Hz
- 33Miles
- 33rpm
- 34 Puñaladas
- 340ml
- 3421 (performed SXSW 2013)
- 347aidan
- 34A (Belgian hip-hop group)
- 34murphy (french rap)
- 357 (band from Belgrade, Serbia)
- 357 String Band, The (US bluegrass band)
- 3582
- 36 (electronic artist Dennis Huddleston)
- 36 Crazyfists
- 36 Questions
- 36? (Canadian alt-rock band)
- 360 (Australian rapper)
- 360 feat. Bright Young Things, The
- 360 feat. Cheney, Chris
- 360 feat. Gossling
- 360 feat. Jeremedy
- 360 feat. Joelistics
- 360 feat. Johns, Daniel
- 360 feat. Miracle
- 360 feat. N'fa
- 360 feat. N’fa
- 360 feat. Pez
- 360 feat. Pyke, Josh
- 360 gradi
- 360’s
- 365 (Brazilian punk band)
- 365 (Vietnamese boy band)
- 37 Hostias
- 38 Special (American rock band)
- 38 Special
- 38 Spesh (US rapper)
- 38 Spesh feat. Che Noir
- 38 Spesh feat. Fred the Godson
