| Unkle Vandy |
| Unknown |
| Unknown Mortal Orchestra |
| Unknown Prophets |
| Unknown Soldiers |
| Unknown T |
| Unleash the Archers |
| Unleashed |
| Unlimited |
| Unlimited Beat |
| Unlimited Nation |
| Unlimited tone |
| Unlinked Artist |
| Unloco |
| Uno Svenningsson |
| Uno the Activist |
| Uno-Dos |
| UnotheActivist |
| Unplugged |
| Unpredictable Nature |
| Unquenchable Worshippers |
| Unquiet Void |
| Unrest |
| Unsane |
| Unseen Terror |
| Unselfish |
| Unshaken |
| Unspoken |
| Unsteady |
| Unsung Heroes |
| Unsung Zeros |
| Until June |
| Until the End |
| Until the Ribbon Breaks |
| Untranslated |
| Unv |
| Unwanted Superheroes |
| Unwed Sailor |
| Unwilling To Quit The Addiction |
| Unwoman |
| Unwound |
| Unwrapped |
| Unwritten Law |
| Up 2 Par |
| Up Front |
| Up Up Down Down Left Right Left Right B A Start |
| Up, Bustle and Out |
| UP-BEAT |
| Upa Dance |
| Upadance |
| Upchurch |
| Uphill |
| Upo |
| Upon a Burning Body |
| Upon This Dawning |
| Upper Austrian Jazz Orchestra |
| Uppermost |
| Uptown |
| Uptown Horns |
| Uptown Vocal Jazz Quartet |
| UR |
| Ural Thomas |
| Uralski All Stars |
| Uran |
| Uranium |
| Uranium 235 |
| Urban |
| Urban Cone |
| Urban Cookie Collective |
| Urban Cowboys |
| Urban Dance Squad |
| Urban Dwellers |
| URBAN GREASE |
| Urban Jazz Coalition |
| Urban Knights |
| Urban Legend |
| Urban Love |
| Urban Method |
| Urban Misfits |
| Urban Mystic |
