- 40 Glocc feat. Prodigy
- 40 Grit
- 40 Thieves (collective of dance music producers in San Francisco, California)
- 40 Thieves (Irish Music Band)
- 40 Thieves feat. Qzen
- 40 Thieves, The (International heavy rock band, based in Switzerland)
- 40 Watt Dreams
- 40 Watt Hype
- 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 Guild
- 404 Not Found (US band)
- 404 Sensei
- 404.zero
- 404Billy (french rapper)
- 404hugo
- 404vincent
- 406 Project
- 408 (pop punk band)
- 408 & SadBois
- 408 Darwin
- 408 feat. Acorn, Taylor
- 408 feat. Titus
- 408, Quinn, Kellin & Magnolia Park feat. Roberts, Joshua
- 40ft to go
- 40mP
- 40mP feat. GUMI
- 41 (US hip hop group)
- 41 & Carter, Jenn
- 41 & Kyle Richh
- 41 & TaTa
- 41, Kyle Richh & Cobain, Cash
- 41, Kyle Richh, Carter, Jenn & TaTa
- 41, Kyle Richh, Carter, Jenn feat. TaTa
- 41, Kyle Richh, Carter, Jenn, TaTa & Dee Billz
- 410 Pharaohs (Baltimore Club vs. Hip-Hop project)
- 411 (V8 Schwester, DJ HIBUSE)
- 411, The (all girl R&B group)
- 413 Effect, The
- 413s, The
- 414bigfrank
- 414JungleBaby
- 415 (US hip hop group)
- 41Point9
- 41st and Home
- 42 Dugg (Detroit rapper)
- 42 Dugg & Clay, Doughboy
- 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)
- 424KP
- 43, DJ
- 43, Zla
- 439 (German rap duo)
- 43ai (Russian rapper)
- 43zla
- 44 Inch Cake
- 44 Magnum
- 44.caliberloveletter (44CLL)
- 441 (Christian Alternative‐pop band active in the 1980s)
- 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
