Ungeküsst soll man nicht schlafen gehn (You should not go to sleep unkissed), also known as Wer zuletzt küsst... (He Who Kisses Last...) is a 1936 Austrian comedy film. The screenplay was written by Fritz Koselka, the title song was composed by Robert Stolz, and the movie was directed by E. W. Emo.

The film, shot in black and white, starred three of the most popular German-speaking comedians of the time—Hans Moser, Heinz Rühmann, and Theo Lingen. In addition, leading roles were played by Liane Haid and Annie Rosar.