Samuel Spencer Johnson (September 1, 1911 – June 20, 1984) was an American businessman, legislator, and philanthropist in the state of Oregon. He owned saw mills and large tracts of timber land near the Metolius River, Black Butte, and Sisters, Oregon. He served seven terms in the Oregon House of Representatives; and along with his wife, founded the Samuel S. Johnson Foundation. He also served as mayor of Redmond, Oregon, from 1979 to 1984.