Conduct Unbecoming is a 1975 British period legal drama film directed by Michael Anderson and adapted by Robert Enders from Barry England's play of the same name. It features an ensemble cast, starring Michael York, Richard Attenborough, Trevor Howard, Stacy Keach, Christopher Plummer and Susannah York. Set in a British Indian Army barracks in the late 19th-century, the film centers on an impromptu court-martial following the assault of an officer's widow.

Conduct Unbecoming was released by British Lion Films on October 5, 1975, to generally positive reviews. The American National Board of Review ranked the film in its Top Ten Films of 1975.