Delaware Seashore State Park is located near Dewey Beach, in Delaware, United States. It is bounded on the east by the mighty Atlantic Ocean and on the west by Rehoboth Bay and Indian River Bay. The park covers . It is a major attraction for millions of visitors who enjoy the large variety of water-related activities available along Delaware's coast. The State Park Commission (now the Division of Parks and Recreation) began operating Delaware Seashore State Park in 1965.

Nearby state parks

• Assateague State Park (Maryland)
• Cape Henlopen State Park (Sussex County)
• Cape May Point State Park (New Jersey)
• Fenwick Island State Park (Sussex County)
• Holts Landing State Park (Sussex County)
• Killens Pond State Park (Kent County)
• Trap Pond State Park (Sussex County)