The Common Cause is a lost[1] 1919 American silent comedy film directed and produced by J. Stuart Blackton and distributed by Vitagraph Company of America.

[2] It is based on a play, Getting Together, by Ian Hay, J. Hartley Manners, and Percival Knight.

[3] As described in a film magazine,[4] Helene Palmer (Breamer) is estranged from her husband Orrin (Rawlinson) due to the attentions paid to her by a man about town.

After the United States enters World War I, she takes up war work and pleads with men from all walks of life on the steps of the New York City public library to enlist.

A German officer goes to her room and is about to assault her when the American troops arrive, and she is saved by her husband.