One Week of Life is a 1919 American silent drama film produced and distributed through Goldwyn Pictures.

Her lover finds an almost exact duplicate of her in young Marion Roche (also Frederick), discusses the situation with both women, and plans a substitution where Marion takes the place of Mrs. Sherwood while the later pretends to visit a child that is ill. LeRoy escapes with the erring Mrs. Sherwood, but Marion's situation becomes complicated when Kingsley sees finer qualities in his supposed wife than in the real Mrs. Sherwood.

He does not suspect any substitution until he finds a letter that Marion has dropped, and he sets a trap to discover her purpose.

Marion is overwhelmed, but she has become interested in the plucky self-struggle Kingsley has put up, while he attributes his reform to her encouragement.

The plot involving the redemption of a drunken husband was timely given the passage of the Wartime Prohibition Act, which took effect June 30, 1919, and banned the sale of alcoholic beverages, and the ratification of the Eighteenth Amendment to the United States Constitution in January of the same year.