Tham Pla–Namtok Pha Suea National Park is a national park in Mae Hong Son Province, Thailand. It is home to caves, waterfalls and steep mountain terrain. It was established as a national park on 23 December 2010.

Mae Hong Son province, also spelled Maehongson, Mae Hong Sorn or Maehongsorn, is one of Thailand's seventy-six provinces (changwat). It lies in upper northern Thailand and is the westernmost province. Neighboring provinces are Shan State of Myanmar, Chiang Mai and Tak. To the west, the province borders Kayin State and Kayah State of Myanmar.