- 4 Strings feat. Lumiere, Eric
- 4 Strings feat. Sphere
- 4 the Cause
- 4 to the Bar (German lounge/latin/jazz quartet)
- 4 to the Bar (garage house ("Slam Me Baby" feat. Alexis P. Suter))
- 4 Trinity (Christian music rap group)
- 4 Tune Fairytales
- 4 Villains
- 4 Wings
- 4 Zimmer Küche Bad
- 4-2-4 (football anthems)
- 4-4-2
- 4-Kuma
- 4‐Skins, The
- 4.0 (RnB/swing/soul group)
- 4*
- 4*TOWN (fictional band)
- 4*Town, Fisher, Jordan, Finneas, Levi, Josh, Ngo, Topher & Villanueva, Grayson
- 4+1 Ensemble
- 40 Below Summer
- 40 Cal.
- 40 Cal. feat. Writer, J.R.
- 40 Fingers
- 40 Ft. Ringo
- 40 Glocc
- 40 Grit
- 40 Thieves feat. Qzen
- 40 Watt Sun
- 40 Winks (Belgian instrumental hip-hop duo)
- 40% (Omri Harpaz; Psy-Trance)
- 40000 Gang (french rap)
- 403 (Japanese melodic power/speed metal/rock band)
- 404 COLLECTIVE
- 404 Sensei
- 404.zero
- 404Billy (french rapper)
- 404hugo
- 404vincent
- 408 (pop punk band)
- 408 Darwin
- 408 feat. Acorn, Taylor
- 408 feat. Titus
- 40ft to go
- 40mP
- 41 (US hip hop group)
- 41 & Kyle Richh
- 41, Kyle Richh, Jenn Carter & TaTa
- 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. EST Gee
- 42 Dugg feat. Foreign, Fivio & Rebel, Rowdy
- 42 Dugg feat. Future
- 42 Dugg feat. Lil Durk
- 42 Dugg feat. Roddy Ricch
- 42 Dugg feat. Rodriguez, Rylo
- 420 Unlovable
- 420 Unlovable, Splash Daddy & okthxbb
- 420/FourTwenty
- 422 (folk band from northern England)
- 424 (Costa Rican rock band)
- 43, Zla
- 43ai (Russian rapper)
- 43zla
- 44 Magnum
- 441
- 44Magnum (Japanese heavy metal band)
- 44phantom
- 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 Big Block (Boston metalcore band)
- 45ACIDBABIES
- 45RPM (Korean hip hop group)
