The 'Time Plays' are a series of dramas written by British author J. B. Priestley written during the 1930s and 40s. They are so called because each plays with a different concept of time. In each play an alternative theory of time becomes the central metaphor or theatrical device of the play, the characters' lives being affected by how they react to the unusual temporal landscape they encounter.
Of all the theories of time employed in the plays Priestley professed to believe only in one: that of J. W. Dunne. Although these plays are still popular with audiences and regularly undergo revivals in the UK, critical opinion remains divided about their literary worth and the validity, or not, of the use of the time theories as theatrical devices.