They're a Weird Mob is a 1966 Australian comedy film based on the 1957 novel of the same name by John O'Grady under the pen name "Nino Culotta", the name of the main character of the book. It was the penultimate collaboration of the British filmmakers Michael Powell and Emeric Pressburger.

The British film-making partnership of Michael Powell (1905–1990) and Emeric Pressburger (1902–1988)—together often known as The Archers, the name of their production company—made a series of influential films in the 1940s and 1950s. Their collaborations—24 films between 1939 and 1972—were mainly derived from original stories by Pressburger with the script written by both Pressburger and Powell. Powell did most of the directing while Pressburger did most of the work of the producer and also assisted with the editing, especially the way the music was used. Unusually, the pair shared a writer-director-producer credit for most of their films. The best-known of these are The Life and Death of Colonel Blimp (1943), A Canterbury Tale (1944), I Know Where I'm Going! (1945), A Matter of Life and Death (1946), Black Narcissus (1947), The Red Shoes (1948), and The Tales of Hoffmann (1951).