CSW
- American Electric Power
- Cashew MRT station
- Catalog Service for the Web
- Central States Wrestling
- Cerebral salt-wasting syndrome
- Charter School of Wilmington
- Cheung Sha Wan
- Cheung Sha Wan station
- Christian Solidarity Worldwide
- College of the Southwest
- Collins Scrabble Words
- Combinatie Sportclub Wilnis
- Communication Support Worker
- Craig Steven Wright
- Crew-served weapon
- List of credentials in psychology
- The Cambridge School of Weston
- United Nations Commission on the Status of Women
- Yield spread