- 3nacria
- 3nity Brothers (French band)
- 3oda Kru
- 3OH!3
- 3OH!3 feat. 100 gecs
- 3OH!3 feat. Kesha
- 3OH!3 feat. Perry, Katy
- 3ohBlack
- 3piece (South Korean trio under SW Entertainment)
- 3Plusss
- 3Plusss x Falco
- 3PM (Baltimore Pop Punk Band)
- 3R2 (producer/DJ Kevin Shih)
- 3rd Alley
- 3rd and the Mortal, The
- 3rd Bass (New York hip-hop group)
- 3rd Bass feat. Chubb Rock
- 3rd Bass feat. KMD
- 3rd Bass feat. Nice & Smooth
- 3rd Bass feat. Zev Love X
- 3rd Coast (Korean electronica trio)
- 3rd Edge
- 3rd Face
- 3rd Faze
- 3rd Force
- 3rd Matinee
- 3rd Party (Dance-pop, Eurodance group)
- 3rd Prototype
- 3rd Prototype feat. Harley Bird/ Franco, Valentina
- 3rd Root
- 3RD Season
- 3rd Secret (grunge supergroup)
- 3rd Storee
- 3rd Strike
- 3rd Trip
- 3rdegree (USA Prog Rock Band)
- 3rio, The
- 3robi (Dutch-Moroccan rapper)
- 3rty (Nigerian Afrocentric Musician)
- 3somesisters
- 3Strange & Grace, Kenya
- 3T (Taj, Taryll and TJ Jackson)
- 3T duet with Jackson, Michael
- 3T feat. Crichlow, Herbie
- 3T feat. Jackson, Michael
- 3T feat. Prince Markie Dee
- 3TEETH
- 3TEETH & Gordon, Mick
- 3TEETH feat. Gordon, Mick
- 3than
- 3union
- 3viertelelf
- 3X (IDOLY PRIDE)
- 3x Krazy
- 3x1
- 3x3cute (music producer)
- 3xBlast
- 3xbravo
- 3xperimental
- 3YE
- 3Yo
- 4 Apostel, Die
- 4 by Four
- 4 Cats
- 4 Circles (Nikita Vasilyev)
- 4 Clubbers
- 4 Door Theater (Alt/ Pop - USA Members: Garrett Joseph Cyr, Bipul Lama & Mark A. Demao Established in 2014)
- 4 Elements
- 4 For Fall
- 4 Front
- 4 Grandes del Norte, Los
- 4 in Love
- 4 Non Blondes
- 4 of Us, The (Northern Irish band)
- 4 Out of 5 Doctors
- 4 P.M. (R&B quartet from Baltimore)
- 4 Promille
- 4 PS
- 4 Strings (Netherlands dance duo)
- 4 Strings & Burton, Cathy
- 4 Strings & Day, Fenna
- 4 Strings & Fridolijn
- 4 Strings & Gallagher, Audrey
- 4 Strings & Heath, Katty
- 4 Strings & Lee, Carol
- 4 Strings & Rivera, Denise
- 4 Strings & Sue McLaren
- 4 Strings feat. Cousins, Tina
- 4 Strings feat. Criado, Ana
- 4 Strings feat. Lawson, Ellie