TSR

TSR may refer to:

Science and technology

• Terminate and stay resident program, a type of MS-DOS computer program
• Thermochemical sulfate reduction, a step in the sulfur cycle that reduces sulfate to sulfide
• Tip-speed ratio, a measurement used for wind turbines
• Temporary speed restriction, UK railway term
• Traffic-sign recognition, by equipment in vehicles

Military

• BAC TSR-2, a prototype British bomber (TSR = Tactical Strike/Reconnaissance)
• TSR I and II, prototypes of the Fairey Swordfish torpedo bomber
• FN Tactical Sport Rifle, manufactured by FN Herstal

Arts, media and culture

• TSR (company) (originally Tactical Studies Rules), game publisher
• Télévision Suisse Romande, a French language Swiss TV channel
• Full Metal Panic! The Second Raid, an anime
• The Sims Resource, a fan site
• True Symphonic Rockestra, an opera-oriented project
• The Student Room, UK internet forum

Organizations

• Telford Steam Railway, a heritage line in the UK
• Toronto Street Railway, a horsecar system operating in Toronto from 1861 to 1891
• Toronto Suburban Railway, a former streetcar system in west Toronto and a former radial (interurban) line to Guelph
• Timișoara Traian Vuia International Airport, near Timişoara, Romania, IATA code
• Trans-Siberian Railway, a network of railways connecting Moscow with the Russian Far East
• TSR Records, a record label

Other uses

• TSR, abbreviation for travelling stock route, referring to stock routes in Australia
• Treno Servizio Regionale, a series of Italian electrical multiple unit trains
• Total shareholder return, a measure of the performance of different companies' stocks and shares over time
• Team Sonic Racing, a kart racing video game by Sega and a spinoff to the Sonic the Hedgehog series