Erawan National Park (Thai: อุทยานแห่งชาติเอราวัณ) is a protected area in Western Thailand, in the Tenasserim Hills of Kanchanaburi Province. Founded in 1975, it was the 12th national park of Thailand.

The establishment of the national park was declared in the Royal Thai Government Gazette on 19 June 1975 and came into effect the following day. This park area was further modified in 1995.

The park covers an area of 343,750 rai (550 km; 212 sq mi) in Sai Yok, Tha Sao and Lum Sum subdistricts in Sai Yok District; Nong Pet and Tha Kradan subdistricts in Si Sawat District, and Chong Sadao Subdistrict in Mueang Kanchanaburi District.