Ellet is a surname. Notable people with the surname include:
Alfred W. Ellet (1820–1895), American civil engineer and United States Army general Charles Ellet Jr. (1810–1862), American civil engineer and United States Army officer Charles R. Ellet (1843–1863), American surgeon and Union Army officer Elizabeth F. Ellet (1818–1877), American writer, historian and poet John A. Ellet (1838–1892), American Union Army officer