- Urnarium (Black Metal-Hungary)
- Ubisumpt (Heavy Metal-Puerto-Rico)
- Undinism (Porno Gore Grind-Australia)
- Univerzum (Death Thrash-North Macedonia)
- Unquadium (Death Metal-Poland)
- Universum (Melodic Death-Australia)
- Unhaim (Crust-Switzerland)
- Unburn (Gothic Black-Portugal)
- Ultimatium (Melodic Power-Finland)
- Unified (Melodic Heavy-Germany)