Ein Herz und eine Seele (literally "One Heart and One Soul" i.e. "hand in glove") is a German television sitcom based on the British sitcom Till Death Us Do Part by Johnny Speight. The show premiered on 15 January 1973 and lasted for 21 episodes, airing its last on 4 November 1974. In 1976 the show had a short-lived revival with another four episodes. Ein Herz und eine Seele was written by Wolfgang Menge.

The show was extremely successful during its initial run and it still proves very popular in reruns. Two episodes in particular, Sylvesterpunsch (about the family's New Year's Eve party) and Rosenmontagszug (set during the winter carnival season) have gained such popularity that they are now shown traditionally on German TV on New Year's Eve and Rosenmontag, respectively.