The River Line is a 1952 stage play by the British writer Charles Langbridge Morgan, based on his own 1949 novel of the same title.

Its combined London run at the Lyric and the Strand lasted for 205 performances between 2 September 1952 and 7 March 1953.

[1] The London cast featured Paul Scofield, Phil Brown, Michael Goodliffe, John Westbrook, Robert Hardy, Marcel Poncin, Pamela Brown, Marjorie Fielding and Virginia McKenna.

[2] In the Second World War a soldier is killed in the mistaken belief that he is a secret German agent.

In 1964 it was adapted into the West German film The River Line directed by Rudolf Jugert and Peter van Eyck, Marie Versini and Walter Rilla.