Green tree snake may refer to either of the following non-venomous snakes:
Morelia viridis, the green tree python, a python species found in New Guinea, various islands in Indonesia, and the Cape York Peninsula in Australia Dendrelaphis calligaster, found in Indonesia (Waigeu, Batanta, Babar,Salawati, Tanimbar, Kai and Aru Islands, Mefoor, Jobi, Irian Jaya, Biak, Numfoor and Yapen; Ambon?), Solomon Islands, Papua New Guinea, and Australia Dendrelaphis punctulatus, the Australian tree snake, a colubrid species found in Australia and Papua New Guinea