The dataset comprises of occurrence data (100+ data points as of May 2019) on six alien reptiles species (Class Reptilia: Order Squamata: Calotes versicolor; Lycodon capucinus; Indotyphlops braminus; Order Testudines: Pelodiscus sinensis; Trachemys scripta; Chrysemys scripta) in the Philippines obtained from published and unpublished scientific literature, personal observations of experts, and from selected Natural History Institutions. The dataset was published and will be updated biannually by HerpWatch Pilipinas, Inc. The development of this dataset was made possible through project of HerpWatch Pilipinas, Inc. (HWP), in collaboration with the Biodiversity Management Bureau of the Philippine Department of Environment and Natural Rersources (BMB-DENR) and The University of Santo Tomas – Biodiversity, Ecology, Systematics, and Taxonomy Group (BEST): “Alien Amphibians and Reptiles, a Threat to Philippine Biosecurity: Developing a National Invasive Alien Amphibian and Reptile Species Inventory and Occurrence Database and an Observation and Monitoring System” Project (BIFA03_26) funded by the Ministry of the Environment, Government of Japan.