Keyport is an unincorporated community and census-designated place (CDP) located in Kitsap County, Washington, United States.

Situated at the eastern terminus of State Route 308 on the Kitsap Peninsula, Keyport is known for its small population and charming coastal setting.

[4] From its early days, prior to World War I, the naval station in Keyport, Washington, underwent several name changes.

As the Cold War drew to a close, a number of budget cuts, two RIFs and several Base Realignment and Closure (BRAC) actions caused Keyport's parent command in Newport, Rhode Island, to reserve the engineering function to itself, at least on paper, resulting in a name change to Naval Undersea Warfare Center - Division Keyport.

One of many subsequent reorganizations resulted in another name change to Naval Sea Systems Command, Keyport (NAVSEA).

However, recreational boaters are cautioned to maintain a minimum distance of 300 feet (91 m) from the base's production area.