Lady Behave is a 1941 British stage musical which was written by Stanley Lupino with music by Edward Horan. Lupino starred alongside Sally Gray who had appeared with him in a number of films. Pat Kirkwood, Judy Kelly and Judy Campbell also featured in other roles during its run. It is set in Hollywood where a stuntman can't get his girlfriend to marry him until she has made a success in films.
By some accounts it was the first new musical staged in London since the outbreak of the Second World War. It was a popular success. As he grew increasingly ill, Lupino had to step down from his role and was replaced by Bobby Howes.
In 1947 it was adapted for the 1947 Swedish musical film Don't Give Up.