Pillar Point Harbor, Protected harbor in San Mateo County, California, US.

Pillar Point Harbor is a boat harbor in San Mateo County, California, immediately north of Half Moon Bay. It is formed by a riprap breakwater built from 1959 to 1961, later extended in 1967 and supplemented by an inner breakwater in 1982. The harbor serves pleasure craft and small commercial fishing boats.

The U.S. Army Corps of Engineers built a riprap breakwater at Pillar Point between 1959 and 1961, along with a pier, the Harbor Master's office and a foghorn. Because southwesterly storm waves still surged through the opening, the western arm was extended by 1,050 feet (320 m) in 1967, and an inner breakwater followed in 1982. The San Mateo County Harbor District has run a Harbor Master's Office and rescue station there since 1970.

The harbor's name comes from Pillar Point, the headland the Spanish Portolà expedition recorded when it camped south of here on October 28, 1769. The anchor of the Rydal Hall, wrecked nearby in October 1876 while carrying coal to San Francisco, was recovered in 1971 and is displayed outside a nearby restaurant.

The harbor entrance opens through the breakwater gap, and southwesterly storm waves have historically surged through that opening, so check sea conditions before entering. The Harbor Master's Office and rescue station have operated on site since 1970. The inner breakwater, added in 1982, shelters the berths behind the outer arm.

The Rydal Hall, carrying coal to San Francisco, wrecked near Pillar Point in October 1876; its anchor was recovered in 1971 and now stands outside a nearby restaurant. Mavericks, the big-wave break, lies about half a mile (1 km) offshore.