Undertow
- Blwyddyn: 2004
- Gwlad: United Kingdom, United States of America
- Genre: Drama, Thriller
- Stiwdio: ContentFilm, Sunflower Productions
- Allweddair: river, runaway, uncle, dysfunctional family, grandparents, curse, tow truck, illness, ex-con, savannah georgia, jealous brother, southern gothic, brothers, pig farm, rural south, secret, boy, violence, valuable coins
- Cyfarwyddwr: David Gordon Green
- Cast: Jamie Bell, Josh Lucas, Dermot Mulroney, Devon Alan, Kristen Stewart, Robert Longstreet