The secretary of state of Washington is an independently elected constitutional officer in the executive branch of the government of the U.S. state of Washington. Fifteen individuals have held the office of Secretary of State since statehood. The incumbent is Steve Hobbs, a Democrat.

The Washington State Capitol in Olympia is the home of the government of the State of Washington. It contains the chambers of the Washington State Legislature, offices for the governor, lieutenant governor, secretary of state, and state treasurer. It is part of a larger administrative campus including buildings for the Washington Supreme Court, the Washington Governor's Mansion, and many other state agencies.