Prince Edward Island National Park is a Canadian National Park located on Prince Edward Island. Situated along the island's north shore, fronting the Gulf of St. Lawrence, the park measures approximately 60 km in length and ranges from several hundred metres to several kilometres in width. Established in 1937, the park's mandate includes the protection of many broad sand beaches, sand dunes and both freshwater wetlands and saltmarshes. The park's protected beaches provide nesting habitat for the endangered Piping Plover; the park has been designated a Canadian Important Bird Area.

An extension was added to the park in 1998 when an extensive sand dune system in Greenwich was transferred from the provincial government to Parks Canada. The Prince Edward Island National Park also includes Green Gables, which was the childhood inspiration for the Anne of Green Gables novels by author Lucy Maud Montgomery.

In recent years, environmental and conservation groups have identified Prince Edward Island National Park as being the most endangered in the national park system, based on human impact.