Pembrokeshire Coast National Park (Welsh: Parc Cenedlaethol Arfordir Penfro) is a national park along the Pembrokeshire coast in Wales. It is the only national park in the United Kingdom to be primarily coastal.

Designated in 1952, the park has a varied landscape of rugged cliffs, sandy beaches, wooded estuaries and wild inland hills, covering a total area of 620 km². It falls into four distinct sections. Running clockwise around the coast, these are the south Pembrokeshire coast, including Caldey Island; the Daugleddau estuary; the St Bride's Bay coast, including the coastal islands; and the Preseli Hills. However, not all of the the park is coastal, and there are even forests and marshes on the edges of the park.

The geology of the area is of particular interest with many good exposures both inland and along the coast, exhibiting a variety of rock types and structural features.

Official Pembrokeshire Coast National Park web site.