A Song at Twilight is a play in two acts by Noël Coward. It is one of a trio of plays collectively titled Suite in Three Keys, all of which are set in the same suite in a luxury hotel in Switzerland. The play depicts an elderly writer confronted by his former mistress with facts about his past life that he would prefer to forget.
First produced in London in 1966, the play is one of Coward's last works for the stage.