| Unholy | 16 Lyrics & 4 Albums |
| Unholy Tongues | 8 Lyrics & 1 Album |
| Unhoped | 5 Lyrics & 1 Album |
| UNIC | 1 Lyric & 1 Album |
| Unicamista | 2 Lyrics & 1 Album |
| Unicorn | 7 Lyrics & 3 Albums |
| Unicycle Loves You | 10 Lyrics & 1 Album |
| Unida | 8 Lyrics & 1 Album |
| Unified Theory | 2 Lyrics & 1 Album |
| Unifier | 12 Lyrics & 1 Album |
| Uniform Motion | 9 Lyrics & 1 Album |
| Uniklubi | 32 Lyrics & 5 Albums |
| Unintentional | 10 Lyrics & 1 Album |
| Union | 4 Lyrics & 1 Album |
| Union 13 | 63 Lyrics & 4 Albums |
| Union Carbide Productions | 44 Lyrics & 4 Albums |
| Union Gap | 1 Lyric & 1 Album |
| Union Jack | 5 Lyrics & 1 Album |
| Union Rose | 1 Lyric & 1 Album |
| Union Starr | 10 Lyrics & 1 Album |
| Union Underground | 11 Lyrics & 2 Albums |
| Unique | 16 Lyrics & 2 Albums |
| Unique II | 1 Lyric & 1 Album |
| Unison | 14 Lyrics & 3 Albums |
| Unisonic | 16 Lyrics & 2 Albums |
| Unit 4 + 2 | 1 Lyric & 1 Album |
| Unit F | 12 Lyrics & 1 Album |
| Unit Four + Two | 2 Lyrics & 1 Album |
| Unit:187 | 27 Lyrics & 3 Albums |
| Unitary | 12 Lyrics & 1 Album |
| United | 16 Lyrics & 1 Album |
| United Kingdom | 3 Lyrics & 1 Album |
| United Live | 1 Lyric & 1 Album |
| United Nations | 15 Lyrics & 2 Albums |
| United Pursuit Bands | 1 Lyric & 1 Album |
| United Steel Workers Of Montreal | 36 Lyrics & 3 Albums |
| Uniting Nations | 4 Lyrics & 2 Albums |
| Unitopia | 26 Lyrics & 2 Albums |
| Unity | 1 Lyric & 1 Album |
| Unity Klan | 1 Lyric & 1 Album |
| Univers Zero | 10 Lyrics & 1 Album |
| Universal Blues Band | 17 Lyrics & 1 Album |
| Universal Hall Pass | 2 Lyrics & 1 Album |
| Universal Solution | 11 Lyrics & 1 Album |
| Universal Trilogy | 10 Lyrics & 1 Album |
| Universe | 4 Lyrics & 1 Album |
| University Of Delaware Deltones | 1 Lyric & 1 Album |
| University Of Rochester Yellowjackets | 1 Lyric & 1 Album |
| Universum | 11 Lyrics & 1 Album |
| Unjust | 12 Lyrics & 1 Album |
| UNK | 21 Lyrics & 3 Albums |
| Unk Feat. T-Pain, Jim Jones & E-40 | 1 Lyric & 1 Album |
| Unkle | 73 Lyrics & 9 Albums |
| Unkle Bob | 4 Lyrics & 1 Album |
| Unkle F/ Ian Brown | 1 Lyric & 1 Album |
| Unkle Feat. Duke Spirit | 1 Lyric & 1 Album |
| Unklejam | 1 Lyric & 1 Album |
| Unknown | 18 Lyrics & 4 Albums |
| Unknown Artist | 1 Lyric & 1 Album |
| Unknown Mizery | 13 Lyrics & 1 Album |
| Unknown Mortal Orchestra | 20 Lyrics & 3 Albums |
| Unkured | 5 Lyrics & 1 Album |
| Unlady Like | 1 Lyric & 1 Album |
| Unladylike | 12 Lyrics & 1 Album |
| Unleashed | 66 Lyrics & 9 Albums |
| Unlimited | 1 Lyric & 1 Album |
| Unlimited Nation | 1 Lyric & 1 Album |
| UNLOCO | 25 Lyrics & 1 Album |
| Unlord | 3 Lyrics & 3 Albums |
| Unnatural Helpers | 13 Lyrics & 1 Album |
| Unni Wilhelmsen | 9 Lyrics & 1 Album |
| Uno Svenningsson | 1 Lyric & 1 Album |
| Unpersons | 1 Lyric & 1 Album |
| Unreal Tournament | 1 Lyric & 1 Album |
| Unrest | 2 Lyrics & 1 Album |
| Unruly Child | 9 Lyrics & 1 Album |
| Uns 5 | 1 Lyric & 0 Albums |
| Unsane | 11 Lyrics & 2 Albums |
| Unseen | 42 Lyrics & 8 Albums |
| Unseen Terror | 3 Lyrics & 2 Albums |
| Unshackled | 17 Lyrics & 1 Album |
| Unspoken | 15 Lyrics & 2 Albums |
| UnsraW | 38 Lyrics & 7 Albums |
| UnSun | 11 Lyrics & 2 Albums |
| Unsung Zeros | 33 Lyrics & 5 Albums |
| Unsure | 1 Lyric & 1 Album |
| untamed melody | 1 Lyric & 1 Album |
| Unter Null | 24 Lyrics & 2 Albums |
| Until June | 21 Lyrics & 3 Albums |
| Untitled | 1 Lyric & 1 Album |
| Unto Acheron | 9 Lyrics & 1 Album |
| Unto Ashes | 2 Lyrics & 2 Albums |
| Untold | 6 Lyrics & 1 Album |
| Untouchabl(U)es | 1 Lyric & 1 Album |
| Untsakad | 1 Lyric & 0 Albums |
| unu | 3 Lyrics & 1 Album |
| UNV | 1 Lyric & 1 Album |
| Unwed Sailor | 9 Lyrics & 1 Album |
| Unwelcome Guests | 12 Lyrics & 1 Album |
| Unwoman | 16 Lyrics & 1 Album |