The Single Track is a lost[1] 1921 American silent melodrama film directed by Webster Campbell and starring Corinne Griffith.

The film is based upon a story by Isabelle Ostrander writing under the pseudonym Douglas Grant.

[2] As described in a film magazine,[3] when New York City society belle Janette Gildersleeve (Griffith) is informed by her uncle Andrew Geddes (Kent) that her property in Alaska is threatened unless a railroad line is built to other holdings, she promptly closes her town house and, under an assumed name, takes a job as a clerk at the North Star Mining Company's store at Katalak, Alaska.

There she encounters civil engineer Barney Hoyt (Travers) who is in charge of building the single track line.

Jim Mallison (Betz) attempts to force his attentions on Janette and Barney saves her from further annoyance.