The Philanderer is a play by George Bernard Shaw. It was written in 1893 but the strict British censorship laws at the time meant that it was not produced on stage until 1902. Shaw wrote two endings for this play, the first ending, with divorce as its main theme, was discarded on the advice of a friend, the second ending resulting in a more conventional marriage. It is the latter that is usually performed or published, though the former is the more in keeping with Shaw's tendencies to criticize contemporary society.

George Bernard Shaw (26 July 1856 - 2 November 1950), known at his insistence simply as Bernard Shaw, was an Irish playwright, critic, polemicist and political activist. His influence on Western theatre, culture and politics extended from the 1880s to his death and beyond. He wrote more than sixty plays, including major works such as Man and Superman (1902), Pygmalion (1913) and Saint Joan (1923). With a range incorporating both contemporary satire and historical allegory, Shaw became the leading dramatist of his generation, and in 1925 was awarded the Nobel Prize in Literature.