GT2 or GT-2 may refer to:
FIA GT2 European Championship One of several categories in the FIA GT Championship Group GT2, former name of LM GTE class. SRO GT2, a class of Grand tourer racing cars aimed at gentleman drivers and maintained by the SRO Motorsports Group Gran Turismo 2, a racing game for the PlayStation video game console The Porsche 911 GT2 Nickname for New Meadowlands Stadium Green-Tweed GT-2, an American single seat glider Gemini 2 (NASA Project Gemini), flight code "GT-2" from the alternate name Gemini-Titan 2 A type of toothed belt used for CNC and 3D-printing machines Denel GT-2, South African 90mm cannon