James Burdette Thayer (March 10, 1922 – September 16, 2018) was an American brigadier general who served on active duty during World War II. On May 4, 1945, Thayer and his platoon discovered and liberated 15,000 people held at a concentration camp near Wels, Austria. Following the war, he continued his service in the United States Army Reserve. In his civilian life, Thayer founded a successful business supply company in Beaverton, Oregon. He was later appointed Oregon's civilian aide to the Secretary of the Army and then re-activated as commander of the Oregon State Defense Force. The Oregon Military Museum at Camp Withycombe is named in his honor.