The Woman on the Index is a lost[1] 1919 American silent drama film directed by Hobart Henley and starring Pauline Frederick and her then husband playwright Willard Mack.

It is based on a 1918 Broadway play, The Woman on the Index, that starred Julia Dean.

Turned out of an unhappy home, she becomes the wife of a handsome and manly type of crook.

Sylvia is put on trial for murder and acquitted, but her name is recorded in a police index that falls into the hands of Hugo Declasse (Mack), an astute agent of the Bolsheviki.

He pursues the wife, but she is also compelled to lend herself to the schemes of a secret service officer.