USS - User System Support

USSA - User Supported Software Association

UT - User Terminal

UTC - Unshielded Twisted Pair

UTF - Unicode Text Format

UTI - Universal Text Interface

UTL - User's Trailer Label

UTM - Universal Transverse Mercator

UTOPIA - Universal Test & Operation Physical Interface

UTP - Unshielded Twisted Pair

UUCP - Unix - to - Unix Copy Program

UUDECODE - Unix - to - Unix Decoding

UUENCODE - Unix - to - Unix Encoding

UUI - User - to - User Information

UUID - Universal Unique Identifier

UVL - User's Volume Label