Purisima Creek is an 8.0-mile-long (12.9 km) stream in San Mateo County, California which rises 1.3 miles (2.1 km) north of Sierra Morena and flows westward to the Pacific Ocean 2.3 miles (3.7 km) south-southeast of Miramontes Point. Much of its watershed has been incorporated in the Purisima Creek Redwoods Open Space Preserve.
The first European land exploration of Alta California, the Spanish Portolà expedition, passed through the area on its way north, camping near the creek on October 27, 1769.
Coordinates: 37°24′15″N 122°25′39″W / 37.404109°N 122.427475°W