"Mod" or "mods" may refer to:
*Honour Moderations, a first set of examinations at Oxford University
*"Manager on duty"
*Maximum operating depth, in scuba diving
*Minimum Object Distance, in camera lenses
*Ministry of Defence
*Modesto City-County Airport
*Multiple organ dysfunction syndrome
*M.O.D., "Method of Destruction", Billy Milano's next band after S.O.D.
*Mod Revival, a genre of rock music in the late 1970s and early 1980s
*Mod (Scotland), a festival of Scottish Gaelic song, arts and culture
*Much on Demand, a request music television show aired on Much Music in Canada
*Mod (lifestyle), 1960's youth movement in England cf. ''Rockers''
*Mod Club Theatre, a nightclub in Toronto, Ontario
*Metadata Object Description Standard, a schema for a bibliographic element set
*MOD (file format), a computer music file format
*Moderator, he who moderates
*Masters of Deception, a New York-based hacker group
*Case modding, the modification of a computer chassis