Pha Daeng National Park (), formerly known as Chiang Dao National Park, is a national park in Chiang Mai Province, Thailand. The park covers 702,085 rai ~ of the Pha Daeng mountain areas of the Daen Lao Range near the border with Burma, just north of Chiang Dao Wildlife Sanctuary. The tallest summit is 1,794 m high Doi Puk Phakka.
The establishment of the national park was declared in the Royal Gazette on 2 November 2000. It became Thailand's 99th national park.