SWS

The abbreviation SWS represents, among other things,
* Si-Ware Systems
* Safety Warning System
* Semantic Web Services are Semantic Web software resources that can be published, discovered, composed and executed across the Web.
* "Semesterwochenstunden" an obsolete German standard for comparing the study attainment of students of higher education, replaced by the ECTS
* Sick Worker Syndrome, a form of clinical depression which can be caused by Repetitive Strain Injury
* Silly window syndrome, a problem in TCP flow control
* Social Weather Stations, a social research institution in the Philippines
* Society of Wetland Scientists
* Southern Water Services
* Super World of Sports, a Japanese professional wrestling promotion
* The IATA airport code for Swansea Airport
* Slow-wave sleep: a term used to describe stages 3 and 4 sleep
* The M24 Sniper Weapon System or M21 Sniper Weapon System sniper rifles
* Love the show, the real meaning of the oft-used compliment "SW's" on the Sarah Kennedy breakfast show on BBC Radio 2
* Sal Withdrawal Syndrome
* Son of Waves Studios (musician)