Hearst San Simeon State Park, Coastal state park in San Luis Obispo County, California.

Hearst San Simeon State Park is a coastal preserve spanning approximately 3,409 acres along the Pacific shoreline, with rocky cliffs, wetlands, riparian woodlands, and natural areas supporting varied plant and animal life. The park contains different zones including developed campgrounds, undisturbed habitats, and the archaeological preserve.

Hearst San Simeon State Park was first established in 1932, covering 3,409 acres between Cambria and San Simeon. In 1990 the Santa Rosa Creek Natural Preserve, the San Simeon Natural Preserve and the 13.7-acre Pa-nu Cultural Preserve were set up within it. In 2005 an easement agreement and property exchange with the neighbouring Hearst Ranch added 1,100 acres of coastal land.

The 13.7-acre Pa-nu Cultural Preserve holds the park's most significant archaeological site, dated to 5850 years before the present. Its deposits document prehistoric technology, subsistence practices and social organization over several centuries. The Chumash inhabited this central coast area from roughly 10,000–11,000 BCE, with a large village south at Morro Creek.

The park provides two distinct camping options ranging from fully developed facilities to more primitive sites with basic amenities. Access and available activities vary by season, so visitors should check ahead about open areas and current trail conditions.

The San Simeon Natural Preserve contains rare mima mound formations whose origins remain scientifically puzzling, along with substantial winter populations of monarch butterflies. These two natural features make this preserve particularly notable from an ecological standpoint.