Hennessy
- Blwyddyn: 1975
- Gwlad: United Kingdom, United States of America
- Genre: Thriller, Drama, Action
- Stiwdio: American International Pictures
- Allweddair: revenge, ira (irish republican army), war hero, assassination plan
- Cyfarwyddwr: Don Sharp
- Cast: Rod Steiger, Lee Remick, Richard Johnson, Trevor Howard, Peter Egan, Eric Porter