Pha Daeng National Park (Thai: อุทยานแห่งชาติผาแดง), formerly known as Chiang Dao National Park, is a national park in Chiang Mai Province, Thailand. Established on 2 November 2000, the park covers 1,123 km² of the Doi Chiang Dao and Pha Daeng mountain areas of the Daen Lao Range, north of the Thanon Thong Chai Range, near the border with Burma.