Five Oaks Museum, formerly known as the Washington County Museum, is a history museum in Washington County, Oregon, United States. It is located at the Rock Creek campus of Portland Community College (PCC), north of Beaverton, Oregon. From 2012 to 2017, its public exhibit space was located in downtown Hillsboro, Oregon, before it was moved back to PCC, its pre-2012 location and where the museum's research facility had already been located.