Hat Wanakon National Park is a sand beach and marine national park in Prachuap Khiri Khan Province, western Thailand. It overlaps two districts of Prachuap Khiri Khan: Mueang Prachuap Khriri Khan and Thap Sakae, with an area of 23,750 rai ~ 38 square kilometres (15 sq mi). The beach is on Petchkasem Road about 23 km from Prachuap Khiri Khan town towards Thap Sakae, about 300 km from Bangkok.