Samuel Lewis Francis (June 25, 1923, San Mateo, California – November 4, 1994, Santa Monica, California) was an American painter and printmaker. He was born in San Mateo, California, and studied botany, medicine and psychology at the University of California, Berkeley. He served in the United States Air Force during World War II before being injured in a plane crash. He was in the hospital for several years, and it was while he was there that he began to paint. Once he was out of the hospital he returned to Berkeley, this time to study art.