Lan Sang National Park (Thai: อุทยานแห่งชาติลานสาง) is located in Tak Province, in northern Thailand. Established in 1979, it is an IUCN Category II protected area measuring 104 square kilometres (40 sq mi).[1] Situated on the Tak-Mae Sot Highway in Mueang Tak District, it became the country's 15th national park.