Pang Sida National Park is a national park in the Sankamphaeng Range, covering 527,500 rai~ 844 square kilometres in the eastern Thai province of Sa Kaeo. It is 28 kilometres north of Sa Kaeo City, the capital of the province. Together with Khao Yai National Park, Thap Lan National Park, Ta Phraya National Park and the Dong Yai Wildlife Sanctuary, it constitutes a part of the Dong Phayayen Forest Complex UNESCO World Heritage Site, covering in total around 6,100 square kilometers.