The Rock in the Sea
- Blwyddyn: 1970
- Gwlad: Ireland, United Kingdom
- Genre: Drama, Mystery
- Stiwdio: Keltik Elk
- Allweddair: sea, island, atlantic ocean, vikings (norsemen), monastery, medieval, mystical, isolated, abandoned, irish film, irish history, independent film, donegal, inishtrahull island, malin head, inishowen, donegal director, irish heritage, irish culture, irish diaspora
- Cyfarwyddwr: Niall Duffy
- Cast: Sean Derry
