Alexander Mackendrick (September 8, 1912 – December 22, 1993) was an American-born Scottish film director and screenwriter. He directed nine feature films between 1949 and 1967, before retiring from filmmaking to become an influential professor at the California Institute of the Arts.

Born to Scottish immigrant parents in Boston, he was raised in Glasgow from the age of 6. He began making television commercials before moving into post-production editing and directing films, most notably for Ealing Studios where his films include Whisky Galore! (1949), The Man in the White Suit (1951) - which earned him an Oscar nomination for Best Screenplay, The Maggie (1954), and The Ladykillers (1955).