MUG

MUG may refer to:


 * Macintosh User Group
 * MUMPS User Group
 * Meet-up game, a term for pick-up game
 * Multi-User Game, another term for multiplayer video game
 * 4-methylumbelliferyl-beta-D-glucuronide, a substrate used in the GUS reporter system
 * Double-stranded uracil-DNA glycosylase, an enzyme
 * The Medical University of Gdańsk in Poland
 * Male Un-bifurcated Garment, a technical term for men's skirts
 * IATA airport code for Mulegé Airstrip, near Mulegé, Baja California Sur, Mexico