The Half Moon Bay State Beach is a state park and protected beach in Half Moon Bay, California. It is composed of four small beaches, namely the Francis, Venice, Dunes, and Roosevelt Beaches, offering a total of four miles worth of shoreline.

The Half Moon Bay area was once a Mexican settlement called Spanishtown. It became known as Half Moon Bay in 1867, after the beach was called Halfmoon due to its shape. The area was a commercial center for rancheros.

Today, the park provides an excellent seaside park to the public. It is popular for swimming, camping, wildlife viewing, fishing, surfing, picnicking, hiking, and even horseback riding. The site is also handicap accessible in many sections, although, the beach itself is too steep.