Twin Harbors State Park is a public recreation area covering 225 acres (91 ha) on the Pacific Ocean two miles south of the town of Westport in Grays Harbor County, Washington. The site was once a U.S. Army training ground, which the state began acquiring for park use in 1937. The state park offers camping, fishing, clamming, beachcombing, and a half-mile interpretive trail in a shoreline pine forest.