| Harris C. Hartwell | |
| Birth Date: | December 28, 1847 |
| Death Date: | December 9, 1891 (aged 43) |
| Nationality: | American |
| Term Start: | 1889 |
| Term End: | 1889 |
| Predecessor: | Halsey J. Boardman |
| Successor: | Henry Harrison Sprague |
| Term Start2: | 1887 |
| Term End2: | 1889 |
| Office3: | Member of the Massachusetts House of Representatives |
| Term Start3: | 1883 |
| Term End3: | 1885 |
| Office4: | Member of the Fitchburg, Massachusetts School Committee |
| Term Start4: | 1874 |
| Term End4: | 1878 |
| Spouse: | Effie M. F. Nedham, m. October 23, 1877. |
| Children: | Norcross N. Hartwell; Harold H. Hartwell. |
| Signature: | Harris C. Hartwell signature.png |
Harris C. Hartwell (December 28, 1847 – December 9, 1891) was a Massachusetts lawyer and politician who served in the Massachusetts House of Representatives, and as a member and President of, the Massachusetts Senate.
Hartwell married Effie M. F. Nedham of Groton, Massachusetts on October 23, 1877. They had two children Norcross N. Hartwell; and Harold H. Hartwell.