- 4-Kuma
- 4‐Skins, The
- 4.0 (RnB/swing/soul group)
- 4*
- 4*TOWN (from Disney and Pixar’s Turning Red)
- 4*Town, Fisher, Jordan, Finneas, Levi, Josh, Ngo, Topher & Villanueva, Grayson
- 4+1 Ensemble
- 40 Below Summer
- 40 Cal.
- 40 Fingers
- 40 Ft. Ringo
- 40 Glocc
- 40 Grit
- 40 Watt Sun
- 40 Winks (Belgian instrumental hip-hop duo)
- 40% (Omri Harpaz; Psy-Trance)
- 40000 Gang (french rap)
- 404 COLLECTIVE
- 404 Not Found (US band)
- 404 Sensei
- 404.zero
- 404Billy (french rapper)
- 404vincent
- 408 (pop punk band)
- 408 feat. Acorn, Taylor
- 411 (V8 Schwester)
- 411, The (all girl R&B group)
- 411, The feat. Ghostface Killah
- 413 Effect, The
- 413s, The
- 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/FourTwenty
- 422 (folk band from northern England)
- 424 (Costa Rican rock band)
- 43, Zla
- 43ai (Russian rapper)
- 43zla
- 44 Magnum
- 44phantom
- 45 Degree Woman
- 45 Dip (acid lounge; Chris Bemand & Mark Daniels)
- 45 Grave
- 45 Roller
- 45, La (La Cuarenta y Cinco)
- 451 (US rapper)
- 454 (stoner band from Uppsala, Sweden)
- 454 (Orlando rapper)
- 45ACIDBABIES
- 45RPM (Korean hip hop group)
- 46bliss
- 47, Dino MC
- 47SOUL
- 47ter (French rap)
- 47ter feat. Fouine, La
- 48 Cameras (Belgian-based international music collective)
- 48May
- 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)
- 4Arm
- 4B (DJ)
- 4brvhvm
- 4Count
- 4EVE (Thai girl group)
- 4EverfreeBrony
- 4EverfreeBrony feat. Chi‐Chi
- 4EverfreeBrony feat. Cookie Dough
- 4Eyez (UK Rapper)
- 4F Club
- 4FT Fingers
- 4Fun (Lithuania)
- 4hands
- 4hero
- 4hero feat. Andersson, Carina
- 4hero feat. Scott, Jill
- 4Him
- 4Keus (french rap)
