Trinidad State Beach is a state beach 20 miles (30 km) north of Eureka in Humboldt County, California.

The offshore rocks are part of the California Coastal National Monument.

Colorful tide pools provide specimens to Cal Poly Humboldt's Fred Telonicher Marine Laboratory located in Trinidad.

Nearby parks include Little River State Beach just south of Trinidad and to the north, Sue-meg State Park.

[1] This park is accessed from a signposted side road at Trinity Street and Stagecoach Road in the seaside town of Trinidad.