The Popular Sin is a 1926 American silent comedy film directed by Malcolm St. Clair, written by Monta Bell and James Ashmore Creelman, and starring Florence Vidor, Clive Brook, Greta Nissen, Philip Strange, George Beranger, and Iris Gray.

It was released on November 22, 1926, by Paramount Pictures.

[1][2] With no prints of The Popular Sin located in any film archives, it is currently a lost film.

Only fragments of reel 6 are in the Library of Congress collection.

This 1920s comedy film–related article is a stub.