The Unchanging Sea
- Taon: 1910
- Bansa: United States of America
- Genre: Drama
- Studio: American Mutoscope & Biograph
- Keyword: based on song, poem or rhyme, silent film, passage of time, loss of memory
- Direktor: D.W. Griffith
- Cast: Arthur V. Johnson, Linda Arvidson, Mary Pickford, Gladys Egan, Charles West, Dell Henderson