Sirinath Marine National Park is a national park in Phuket, in southern Thailand. Located along the western coast of North Phuket facing the Andaman Sea, it covers 90 sq km of which 76% or 68 sq km is off-shore while the remainder 22 sq km is on the Phuket mainland.
Sirinath Marine National Park protects the forested areas along the northern coast of Phuket, including stretches of beach that are nesting sites for sea turtles. Originally known as Sirinath National Park, it was renamed Sirinath Marine National Park in 1992, on the occasion of the 60th birthday of Her Majesty Queen Sirikit.