Ubiquity
www.ubiquityrecords.com
Ultramack
www.groov.ie/ultramack
Uncivilized world
divisions : Uwe, Uw, Gazole, Epiteth, Bloc 46, Woody stuff, Opulsion, Anlx, Human
www.uncivilizedworld.com
Underfire
created by Stakka
Universal Music
www.umusic.com
Uprising
Concord dawn's label