We present detailed species accounts for 55 species of amphibians and reptiles (14 species of frogs,24 snakes,16 lizards,one turtle) from 24 localities in the vicinity of Subic Bay,southern Zambales Province,Luzon Island,Philippines.Although we note numerous species that are conspicuously absent in Subic Bay (and which we expect will eventually be recorded in the region),our many new records plus a summary of the available historical museum specimen data depict a diverse subset of species diversity known from the southern Zambales Mountains of southwestern Luzon.We compare our data to several other recent herpetofunal surveys from Luzon,discuss biogeographic regionalism of this complex island,and report on numerous new natural history observations for many included species.With the absence of any protected areas in the entire province,the amphibians and reptiles of Zambales should be a particularly important future conservation priority.