UMD

UMD could mean:

Universal Media Disc, a disc format created by Sony for the PlayStation Portable.
Under Monitor Display, a display used in television production galleries to indicate the source displayed above it.
United Macedonian Diaspora, a Washington, D.C. based organization addressing the interests and needs of ethnic Macedonians.
Unified Medical Dictionary: Arabic electronic medical dictionary; (English - French - Arabic)

Universities:
University of Maryland
University of Massachusetts Dartmouth, a campus of the University of Massachusetts
University of Michigan-Dearborn, a campus of the University of Michigan
University of Minnesota Duluth, a regional university of the University of Minnesota
United Medical and Dental Schools of Guy's and St Thomas's Hospitals, now part of King's College London