- 408, Quinn, Kellin & Magnolia Park feat. Roberts, Joshua
- 40ft to go
- 40mP
- 40mP feat. GUMI
- 41 (US hip hop group)
- 41 & Kyle Richh
- 41, Kyle Richh, Jenn Carter & TaTa
- 41, Kyle Richh, Jenn Carter, TaTa & Dee Billz
- 410 Pharaohs (Baltimore Club vs. Hip-Hop project)
- 411 (V8 Schwester, DJ HIBUSE)
- 411, The (all girl R&B group)
- 411, The feat. Ghostface Killah
- 413 Effect, The
- 413s, The
- 414bigfrank
- 415 (US hip hop group)
- 41st and Home
- 42 Dugg (Detroit rapper)
- 42 Dugg & Roddy Ricch
- 42 Dugg feat. Blac Youngsta
- 42 Dugg feat. EST Gee
- 42 Dugg feat. Foreign, Fivio & Rebel, Rowdy
- 42 Dugg feat. Future
- 42 Dugg feat. Jeezy
- 42 Dugg feat. Lil Baby
- 42 Dugg feat. Lil Durk
- 42 Dugg feat. Meek Mill
- 42 Dugg feat. Roddy Ricch
- 42 Dugg feat. Rodriguez, Rylo
- 42 Dugg feat. Sexyy Red
- 42 Dugg, Peezy, EWM Kdoe, BagBoy Mell, Cash Kidd & Buck, EWM
- 420 Unlovable
- 420 Unlovable, Splash Daddy & okthxbb
- 420/FourTwenty
- 422 (folk band from northern England)
- 424 (Costa Rican rock band)
- 43, DJ
- 43, Zla
- 439 (German rap duo)
- 43ai (Russian rapper)
- 43zla
- 44 Magnum
- 44.caliberloveletter (44CLL)
- 441
- 4411, The (Group)
- 44Magnum (Japanese heavy metal band)
- 44phantom
- 44Raid (French rapper)
- 44th Move
- 45 Adapters
- 45 Degree Woman
- 45 Dip (acid lounge; Chris Bemand & Mark Daniels)
- 45 Grave
- 45 King, The (aka DJ Mark)
- 45 Roller
- 45 Stars
- 45, La (La Cuarenta y Cinco)
- 450
- 451 (US rapper)
- 454 (stoner band from Uppsala, Sweden)
- 454 (Orlando rapper)
- 454 & Surf Gang
- 45ACIDBABIES
- 45RPM (Korean hip hop group)
- 45th St Brass
- 46bliss
- 47, Dino MC
- 47SOUL (Palestinian Jordanian electronic music group)
- 47SOUL & Lowkey
- 47stillstanding
- 47ter (French rap)
- 47ter feat. Fouine, La
- 47ter feat. Gueko, Seth
- 47ter feat. KIK
- 47ter feat. Robin
- 47ter feat. Tayc
- 47ter feat. Todiefor & Janee
- 48 Cameras (Belgian-based international music collective)
- 485C
- 48May (New Zealand pop rock)
- 48th St. Collective
- 49 Americans, The
- 49 Burning Condors (Philly-based Gothic Witch Rock)
- 49 Days
- 49 Winchester (Appalachian soul music)
- 49ers (Italian house and Eurodance)
- 49ers, The (Delaware hip-hop duo)
- 49th & Main
- 49th Parallel (1960s Canadian pop band)
- 4am Kru (Jungle crew)
