TSR

TSR may refer to:

Science and technology

 * Terminate-and-stay-resident program, a type of MS-DOS computer program
 * Thermochemical sulfate reduction, reducing sulfate to sulfide
 * Tip-speed ratio, of a wind turbines
 * Temporary speed restriction, UK railway term
 * Traffic-sign recognition, by equipment in vehicles

Military

 * BAC TSR-2, a prototype British bomber
 * TSR I and II, prototypes of the Fairey Swordfish torpedo bomber
 * FN Tactical Sport Rifle
 * Transvaal Scottish Regiment

Arts, media and culture

 * TSR, Inc., game publisher
 * Télévision Suisse Romande, a French-language Swiss TV channel
 * Full Metal Panic! The Second Raid, an anime
 * Team Sonic Racing, a video game
 * True Symphonic Rockestra, an opera-oriented project
 * The Student Room, UK internet forum
 * "T.S.R. (Toilet Stool Rap)", song from Biz Markie's album I Need a Haircut
 * The Shade Room, media company

Organizations

 * Telford Steam Railway, UK
 * Toronto Street Railway (horse-drawn), 1861-1891
 * Former Toronto Suburban Railway
 * Timișoara Traian Vuia International Airport, Romania, IATA code
 * Trans-Siberian Railway
 * TSR Records

Other uses

 * Travelling stock route, Australia
 * Treno Servizio Regionale, Italian trains
 * Total shareholder return
 * Traditional Spelling Revised, a relatively conservative English-language spelling reform