Lyman Stewart (1840 – 1923) was a U.S. businessman and cofounder of what eventually became Unocal. Stewart was also a significant Christian philanthropist and cofounder of the Bible Institute of Los Angeles (now known as Biola University). He and his brother Milton also anonymously funded The Fundamentals, a four-volume publication that became a classic defense of the Christian faith and was the foundation of the fundamentalist Christian movement. . Stewart also helped found the Union Rescue Mission in L.A.