WSM may refer to:
- WSM (AM), a radio station (650 AM) licensed to Nashville, Tennessee, United States
- WSM-FM, a radio station (95.5 FM) licensed to Nashville, Tennessee, United States
- WSMV-TV, a television station (channel 4 analog/10 digital) licensed to Nashville, Tennessee, United States, which used the call sign WSM-TV from September 1950 to November 1981
- Web-based System Manager, an IBM management software for administering AIX 5L host on RS/6000 systems
- Weighted sum model, the best known and simplest method for evaluating a number of alternatives in terms of a number of decision criteria
- Workers Solidarity Movement, an Irish anarchist movement
- World Socialist Movement, an international organisation of socialist parties
- Winchester Short Magnum, a family of rifle cartridges developed by the U.S. Repeating Arms Company, maker of Winchester rifles
- World's Strongest Man competition
- Warner Strategic Marketing, a compilations arm of the Warner Music Group
- Weston-super-Mare an english seaside resort in Somerset
- Samoa ISO 3166-1 country code