The Sea of Grass
- Blwyddyn: 1947
- Gwlad: United States of America
- Genre: Drama, Western, Romance
- Stiwdio: Metro-Goldwyn-Mayer
- Allweddair: husband wife relationship, cattle ranch, environmental conservation, cattle baron, abandoned by mother, grass valley, unhappy marriage, unfaithful wife, out of wedlock child, raised like own child, father son relationship, the song of nature, settlers
- Cyfarwyddwr: Elia Kazan
- Cast: Spencer Tracy, Katharine Hepburn, Robert Walker, Melvyn Douglas, Phyllis Thaxter, Edgar Buchanan