Play Dirty is a 1969 British war film starring Michael Caine, Nigel Davenport, Nigel Green and Harry Andrews. It was director Andre de Toth's last film, based on a screenplay by Melvyn Bragg and Lotte Colin.

The film's story is inspired by the exploits of units such as the Long Range Desert Group, Popski's Private Army and the SAS in North Africa during the Second World War.