Washington County Museum
 Washington County Museum is a history museum located in downtown Hillsboro Oregon United States. Opened in 1975 the museum is operated by the Washington County Historical Society with a mission of preserving the history of the area. The museum moved the main exhibit space to downtown Hillsboro at the Civic Center in 2012. The prior museum space remains as a research library at Portland Community College's Rock Creek Campus and as home to the original Washington County Jail built in 1853.