| Ralph Nichols | |
| Birth Date: | 1 March 1874 |
| Birth Place: | Panora, Iowa, U.S. |
| Death Place: | Seattle, Washington, U.S. |
| Player Years1: | 1892–1894 |
| Player Team1: | Washington |
| Player Positions: | Guard |
| Coach Years1: | 1895–1896 |
| Coach Team1: | Washington |
| Coach Years2: | 1898 |
| Coach Team2: | Washington |
| Coach Years3: | 1899 |
| Coach Team3: | Washington (assistant) |
| Overall Record: | 7–4–1 |
| Office: | President pro tempore of the Washington Senate |
| Term Start: | January 8, 1917 |
| Term End: | January 13, 1919 |
| Predecessor: | Edward L. French |
| Successor: | Phillip H. Carlyon |
| Office1: | Member of the Washington State Senate for the 31st district |
| Term1: | 1907–1919 |
| Party: | Republican |
Ralph Day Nichols (March 1, 1874 – July 19, 1949) was an American college football player and coach and politician. He served as the head coach at the University of Washington from 1895 to 1896 and again in 1898, compiling a record of 7–4–1.[1]
Nichols later served in the Washington Senate from 1906 to 1919 and on the Seattle City Council from 1924 to 1934. From 1917 to 1919, he was president pro tempore of the Senate. Nicholas died on July 19, 1949.[2]