Khun Nan National Park () is a protected area in the western side of the Luang Prabang Range in the Thai/Lao border area, on the Thai side of the ridge. It is named after Khun Nan subdistrict (tambon) of Chaloem Phra Kiat District of Nan Province and includes parts located in Bo Kluea District. The park is located north of the Doi Phu Kha National Park and was established in 2009.