Multnomah County Sheriff's Office Search and Rescue (MCSO SAR) is a non-profit volunteer search and rescue resource for the Multnomah County Sheriff's Office in Multnomah County, Oregon, United States. The agency also offers its 3,000-5,000 hours of volunteer service to other areas, including Clackamas, Columbia, Washington, Marion, Hood River, Wasco, Tillamook, and Clatsop counties in Oregon, and Skamania and Clark counties in Washington. The organization was first created in 1961 in cooperation with the Boy Scouts of America, and is one of the longest continually used Explorer Search and Rescue units in the United States. In 1986, sponsorship of the MCSO SAR was transferred to the Multnomah County Sheriff's Office.