JSS may refer to:
Military
edit- Joint Security Stations, components of 2007's Operation Imposing Law in Iraq
- Joint support ship, a multi-role naval vessel
- Joint Surveillance System, a USAF and FAA system for the atmospheric air defense of North America
- Protecteur-class auxiliary vessel (previously the Joint Support Ship Project), naval auxiliaries for the Royal Canadian Navy
Organizations and corporations
edit- Janathipathiya Samrakshana Samithy, a political party in the Indian state of Kerala
- Japan Statistical Society, a learned society in Japan
- Jönköpings SS, a Swedish swimming club
- Joyson Safety Systems, an American automotive safety systems company
Schools
edit- James Striar School of General Jewish Studies
- Japanese School of Suzhou, a Japanese international school in China
- Jurong Secondary School, a government secondary school in Taman Jurong, Singapore
Other
edit- Jet Stream International (airline code: JSS), a Pakistani airline
- Journal of the Siam Society, a scholarly journal published by the Siam Society in Bangkok
- "JSS" (The Walking Dead), the second episode of the sixth season of the post-apocalyptic horror television series
- Junior Solar Sprint, a competitive program for 5th-to-8th-grade students to create a small solar-powered vehicle
- Network Security Services for Java (JSS), a component of the Network Security Services collection of cryptographic computer libraries