TR2 may refer to:
C++ Technical Report 2, a document proposing additions to the C++ Standard Library after Technical Report 1 TR2, a postal district in the TR postcode area TAS1R2, a taste receptor
Facilities Theatre Royal 2, a drama productions studio, part of Theatre Royal, Plymouth Westinghouse TR-2 research reactor operated in the 1960s
Transportation Triumph TR2, a sports car from the British Triumph Motor Company Tr2, a 2-10-0 steam locomotive (decapod) built in the USA, but operated in Finland TR-2, a variant of the Grumman American AA-1 TR.2, a variant of the Hitachi TR.1 TR.2, see Orenda Engines
Video games Temple Run 2 Tomb Raider II, a video game