The Olympic Peninsula is shown in red on a map of the western United States

The Olympic Peninsula is the large arm of land in western Washington state that lies across Puget Sound from Seattle. Tatoosh Island , the westernmost point in the contiguous United States, is off the Peninsula, where Port Angeles, Olympic National Park, the Olympic Mountains, and the Hoh and Quinault rain forests are situated.

U.S. Highway 101 runs along the Olympic Peninsula's eastern, northern, and western shorelines, having originated in Olympia, the state capital.

Lakes on the peninsula include Lake Aldwell , Lake Crescent , Lake Mills, Lake Ozette , Lake Pleasant, Lake Quinault, and Lake Sutherland , and its rivers include the Bogachiel, the Dungeness, the Elwha, the Queets, the Quilayute , the Quinault , the Skokomish, and the Sol Duc .

The Peninsula is also home to many state and national parks, including Anderson Lake , Bogachiel , Dosewallips , Fort Flagler, Fort Worden, Lake Cushman , Mystery Bay, Old Fort Townsend , Potlatch , Seqium Bay , Shine Tidelands , and Triton Cove State Parks, Olympic National Park, and the Olympic National Forest.

Clallam and Jefferson Counties as well as the northern parts of Grays Harbor and Mason Counties are on the peninsula.

Cities and towns

• Amanda Park
• Brinnon
• Chimacum
• Discovery Bay
• Eldon
• Forks
• Hoodsport
• Hoquiam
• Humptulips
• Kalaloch
• La Push
• Lilliwaup
• Moclips
• Neah Bay
• Ocean City
• Olympia
• Ozette
• Pacific Beach
• Port Angeles
• Port Hadlock
• Port Ludlow
• Port Townsend
• Potlatch
• Quilcene
• Quinault
• Sequim
• Shelton
• Union