James B. Clark Jr. (May 14, 1908 – July 19, 2000) was an American film director, film editor, and television director. His career as a film editor began in 1937, and he was nominated for the Academy Award for Best Film Editing in 1941 for How Green Was My Valley. He continued to work as a film editor until 1960, but in 1955 also began a career as a film and television director. He tended to focus on works involving people's relationships with animals. Among the more popular and notable projects he directed were the films A Dog of Flanders (1959), The Sad Horse (1959), Misty (1961), Flipper (1963), Island of the Blue Dolphins (1964), and My Side of the Mountain (1969), and episodes of the television series My Friend Flicka (1955-1956), Batman (1966-1967), and Lassie (1969-1971).