Khao Lak–Lam Ru National Park is a national park in Phang Nga Province, Thailand. The park is named for two of its mountain peaks, Khao Lak and Lam Ru. It also encompasses beaches and forests.

Phang Nga is one of the southern provinces (Changwat) of Thailand, on the shore of the Andaman Sea to the west and Phang Nga Bay to the south. Neighbouring provinces, from north and moving clockwise, are Ranong, Surat Thani, and Krabi. Towards the south of Phang Nga is the Phuket province, connected by the Sarasin Bridge.