- Umer, Magda i Turnau, Grzegorz
- Umherschweifende Produzenten
- Umi (New York rapper)
- UMI (LA-based recording artist, songwriter)
- UMI ft. V
- Umii
- Uminski
- Uminski, Philippe
- Umlala
- Umm (Duo of Christopher Senseney and Stefanie Drootin-Senseney)
- Umme Block
- Ummi, Voices of
- UMMO
- Umoh, Mike
- Umoja (South African band of 1980s and 1990s)
- Umosia
- Umphress, Alysha
- Umphrey’s McGee
- Umpi, Dani
- Umpire (Austrian dubstep producer)
- Umpteens, The
- umru
- umru & Believe, Cecile
- umru & Petal Supply feat. Black, Rebecca
- umru, Black, Rebecca & Petal Supply
- umru, emotegi & simons, Aj
- umru, Tommy Cash & 645AR
- Umse (German Rapper)
- Umse feat. Aphroe
- Umse feat. Dike
- Umse feat. Jokaz
- Umse feat. Masta Ace
- Umse feat. Megaloh
- Umse feat. Pimf & Abroo
- UMX
- Umziky (Instrumentalist/producer Johannes Granroth)
- Un (Indie Rock)
- UN (Finnish rock band)
- Un Blonde
- Un Drame Musical Instantané
- Un Kuartito
- Un tal Lucas
- Un‐Cut (drum & bass group, track “Midnight”)
- UNA (downtempo electronica group from Los Angeles)
- Una Canción Bonita
- Una Mas
- Una Mas Trio
- UNA MIA (Alt pop R&B singer songwriter from Toronto)
- Unable to Fully Embrace This Happiness (Emoviolence/Screamo band)
- Unabomb (Artist from Michigan)
- Unabomber (Brazilian punk band)
- Unalei
- UnAlfabet
- Unamerican
- Unamused Dave
- Unanimated
- Unantastbar
- Unashamed
- UNAVERAGE GANG
- UNAVERAGE GANG feat. Schizo
- UNB
- Unband, The
- Unbelievable Truth
- Unbending Trees, The
- Unbending Trees, The Featuring Thorn, Tracey
- Unbirth
- Unbound (dubstep)
- Unbowed
- Unbreakable (German Hard Rock group)
- Unbreakable Hatred (Death Metal band form Quebec)
- Unbroken
- Unbroken Expanse (Northern Territory, Australia rock band)
- Unbunny
- Unburier (UK Death Metal Band)
- Unbuttoned
- uncalc
- Uncanny (Swedish death metal)
- Uncanny Alliance
- Uncanny X-Men
- UNCHAIN (Japanese rock band)
- Unchained (UK Punk)
- Uncharted Shores (California band, formerly known as One Direction)
- Uncharted, The
- Unchosen Ones
- Unción Tropical (Christian music band)
- Uncle Acid & The Deadbeats
- Uncle Bard & The Dirty Bastards
- Uncle Bard and The Dirty Bastards
- Uncle Black (UK band Les King / Mike Aldridge / Paul Ashworth)
- Uncle Bonsai
