The Theatre Guild is a theatrical society founded in New York City in 1918 by Lawrence Langner, Philip Moeller, Helen Westley and Theresa Helburn. Langner's wife, Armina Marshall, then served as a co-director. It evolved out of the work of the Washington Square Players.

Liliom is a 1909 play by the Hungarian playwright Ferenc Molnár. It was well known in its own right during the early to mid-20th century, but is best known today as the basis for the Rodgers and Hammerstein 1945 musical Carousel.