Her Sister's Secret
- Blwyddyn: 1946
- Gwlad: United States of America
- Genre: Drama
- Stiwdio: PRC
- Allweddair: wartime, mardi gras, sister, shame
- Cyfarwyddwr: Edgar G. Ulmer
- Cast: Nancy Coleman, Margaret Lindsay, Phillip Reed, Regis Toomey, Henry Stephenson, Frances E. Williams