TSP or tsp may refer to:
Medicine Tropical spastic paraparesis, weakness due to T-lymphotropic virus infection
Science and technology Team software process, for producing software Telecommunications service provider .tsp, for telephony service provider, file extension for a Microsoft API Thiele/Small parameters, of a loudspeaker driver Thrombospondin, protein Time stamp protocol in cryptography Titanium sublimation pump, a type of vacuum pump Trailer stability program on Opel vehicles Transit signal priority, for buses Travelling salesman problem, optimization problem Trimethylsilyl-2,2,3,3-tetradeuteropropionic acid, derivative of tetramethylsilane Trisodium phosphate, cleaning agent TSP (econometrics software), programming language Tunnel Setup Protocol, in networking Time Synchronization Protocol, see timed Type Set Page, in E-publishing
Food and cooking Teaspoonful, abbreviation Textured soy protein
Governmental Taconic State Parkway, New York State, USA Telecommunications Service Priority in an emergency, USA Texas Student Publications, USA Texas Special Police Texas State Police Threatened Species Protection Act 1995, Tasmania, Australia Thrift Savings Plan, USA Trust service provider
Internationally Tajikistan Support Project, supporting healthcare Texas Star Party for astronomers TSP, IATA airport code for Tehachapi Municipal Airport, California, USA TSP, MTR station code for Tuen Mun Swimming Pool stop, Hong Kong
Political parties National Harmony Party, former party in Latvia Taiwan Solidarity Party Taiwan Statebuilding Party Third Society Party, Taiwan
Other The Stanley Parable, a 2013 video game developed by Galactic Cafe Toronto St. Patricks, an early name for the Toronto Maple Leafs of the National Hockey League