Sailor Beware! (play)

From the 1955 London production: left to right Peggy Mount, Ann Wilton, Myrette Morven, Jean Burgess and Sheila Shand Gibbs

Sailor Beware! is a comic play by Philip King and Falkland Cary. After a repertory company production in Worthing in 1954, it opened in the West End of London on 16 February 1955 and ran for 1,231 performances.

The play depicts the successful attempt by a young sailor to curb the tyrannical ways of his prospective mother-in-law. It was the first London appearance by Peggy Mount, who achieved immediate celebrity in the role of the domineering Mrs Hornett. The play spawned a film adaptation and a stage sequel, and has been revived on several occasions.