Coffin Bay National Park is a protected area in on the Eyre Peninsula of South Australia, Australia, which is located about 301 km west of Adelaide and about 46 km west of Port Lincoln. The town of Coffin Bay is near the entrance to the national park. The national park occupies the Coffin Bay Peninsula - a long peninsula with a sheltered bay to its north, coastal dunes, swamps and a coastline which overlooks islands, reefs, limestone cliffs and white surf beaches.