An annotated inventory of the herpetofauna of Lawachara National Park in Bangladesh is presented, based primarily on original field observations recorded during a six-year survey of the park. A total of 71 species are reported, including 19 Anura, one Apoda, two Chelonii, and 49 Squamata. The course of the survey revealed 16 range extensions including 11 new country records for Bangladesh. Eight of the 16 range extensions including six of the 11 country records are reported here for the first time. Deleted from previous Lawachara National Park checklists are 23 species that had been erroneously reported due to misidentification, a species split, or the subsumption of the species within another taxa.