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| U.D.O | Mastercutor | Heavy Metal | |
| Ueickap | Stereotyped | Modern Hard | |
| UFO | Showtime | Hard Rock | |
| UFO | The Monkey Puzzle | Hard Rock | |
| Ultime Atome | Dark Visions | Prog | |
| Umbra Et Imago | Mea Culpa | Gothic | |
| Umbra Et Imago | Dunkle Energie | Gothic | |
| Umphrey's McGee | Anchor Drops | Jam Band | |
| Umphrey's McGee | Safety in Numbers | Jam Band | |
| Unchained | Unchained | Heavy Metal | |
| Under Radio | Under Radio | Hard Rock | |
| Under Radio | Bad Heir Ways | Prog Metal | |
| Under the Sun | Under the Sun | Prog Metal | |
| Underdogs | Ready to Burn | Stoner | |
| Underfloor | Underfloor | Rock Italiano | |
| U-NI | Samadhi | Space Rock | |
| United States Of Mind | United States Of Mind | Hard Rock | |
| Unto Ashes | Moon Oppose Moon | Gothic | |
| Uppsala | Uppsala | Prog | |
| Upsilon Acrux | Galapagos Momentum | Punk | |
| Ureas | The Naked Truth | Dark Metal | |
| Uz Jsme Doma | V Tokiu | Prog |