GTP may stand for: · Guanosine triphosphate, an organic chemical · GPRS Tunnelling Protocol, for connecting over a network · Graduate Teacher Programme, a teacher education programme · Good Tissue Practices, a medical standard · Go Text Protocol, for the board game of go · GTPlanet, an online community dedicated to Gran Turismo · Grand Touring Prototype, a race car category in IMSA GT Championship GTPGTPGTPGTP