William Henry Landis (born October 8, 1942) is an American former professional baseball pitcher. A left-hander, he appeared in 102 games pitched in Major League Baseball (MLB) in 1963 and from 1967–1969 for the Kansas City Athletics and Boston Red Sox. Landis was born in Hanford, California; he was listed as 6 feet 2 inches (1.88 m) tall and 178 pounds (81 kg).