WSP may refer to:
- WSP Group, British-based business providing management and consultancy services to the built and natural environment
- Women Strike for Peace, United States women's peace activist group
- Water safety plan, initiative developed by the World Health Organisation for risk management of water supplies
- Washington State Patrol, Washington State Law Enforcement Agency
- West St. Paul, Minnesota, suburb of Saint Paul, Minnesota
- Wetumpka State Penitentiary, former prison in Alabama
- Widespread Panic, American rock band
- Wandering salesman problem, in discrete optimization, similar to the travelling salesman problem
- Web service provider
- Wireless Session Protocol, upper layer of the Wireless Application Protocol stack
- Waspam Airport (IATA Code: WSP) in Waspam, Nicaragua
- Wheel slide protection, used on rail vehicles
- Wigan St Patricks, amateur rugby league club based in Wigan, England
- White Supreme Power, a phrase often used by Neo-Nazis
- World Soundscape Project, an acoustic ecology research project