The San Gregorio State Beach is a state park and beach in San Gregorio, California. It features the area where San Gregorio Creek seeps to the Pacific Ocean.

Also registered as California Historical Landmark #26, the San Gregorio State Beach is also quite historic. In 1769, it served as the camp site of Spanish explorer Gaspar de Portola?s expedition. The group was attempting to reach Monterey Bay at that time, but discovered San Francisco Bay instead. It was also once a coho salmon spawning site under the management of the Department of Fish and Game.

Offering an interesting natural setting, the San Gregorio State Beach is usually referred to as a gem. It is also considered as one of the cleanest state beaches in California.