| Ralph Waterbury Ellis | |
| Order: | 29th |
| Office: | Mayor of Springfield, Massachusetts |
| Term Start: | 1902 |
| Term End: | 1902 |
| Predecessor: | William P. Hayes |
| Successor: | Everett E. Stone |
| Office2: | Member of the Board of Aldermen of Springfield, Massachusetts Ward Four |
| Term Start2: | 1897 |
| Term End2: | 1898 |
| Successor2: | Edwin A. Blodgett |
| Office3: | Member of the Common Council of Springfield, Massachusetts Ward Four |
| Term Start3: | 1896 |
| Term End3: | 1896 |
| Office4: | Member of the Massachusetts House of Representatives |
| Term Start4: | 1893 |
| Term End4: | 1893 |
| Birth Date: | 25 November 1856 |
| Death Place: | Springfield, Massachusetts |
| Alma Mater: | Harvard, 1879; Harvard Law School |
| Profession: | Attorney, banker |
| Spouse: | Katherine Alice Rice, m. April 13, 1882 |
| Children: | Theodore W. Ellis; Ralph W. Ellis |
Ralph Waterbury Ellis (November 25, 1856 – September 28, 1945) was an American lawyer, banker and politician who served in the Massachusetts House of Representatives, as a member of the Springfield, Massachusetts Board of Aldermen and Common Council, and as the Mayor of Springfield in 1902.
Ralph W. Ellis was born to Theodore Waterbury and Maria Louise (Van Boskerck) in South Hadley Falls, Massachusetts, November 25, 1856.
He graduated from Harvard University cum laude in 1879, and from Harvard Law School in 1881.[1]
He died at his home in Springfield on September 28, 1945.[1]