The Kitsap Peninsula (/ˈkɪtˌsæp/) lies west of Seattle across Puget Sound, in Washington state in the Pacific Northwest.
Both were named for Chief Kitsap, a late 18th- and 19th-century warrior and medicine man of the Suquamish Tribe.
The Suquamish were one of the historical fishing tribes belonging to the Coast Salish group of peoples, and their ancestral grounds were based on the eastern shores of the Kitsap Peninsula.
The Port Madison Indian Reservation, located between Poulsbo and Agate Pass, is the modern Suquamish tribal center.
The Kitsap Peninsula is also home to the Port Gamble S'Klallam Tribe, another branch of Coast Salish people; their tribal center is the Port Gamble S'Klallam Indian Reservation at Little Boston, located on the northwest coast of the peninsula.