| Samuel A. Ferrin | |
| State: | Wisconsin |
| State Assembly: | Wisconsin |
| District: | Grant 3rd |
| Term Start: | January 1, 1872 |
| Term End: | January 6, 1873 |
| Predecessor: | John Chandler Holloway |
| Successor: | John Monteith |
| Party: | Republican |
| Birth Date: | 19 January 1831 |
| Birth Place: | Saint-Thomas, Upper Canada |
| Death Place: | Mineral Point, Wisconsin, U.S. |
| Restingplace: | Union Grove Cemetery, |
| Spouse: | Mary Margaret Mason |
| Education: | Rush Medical College |
| Profession: | Physician |
| Allegiance: | United States |
| Branch: | United States Volunteers Union Army |
| Rank: | 1st Assistant Surgeon, USV |
| Serviceyears: | 1862 - 1865 |
| Battles: | American Civil War |
Samuel Abbott Ferrin (January 19, 1831March 29, 1875) was a Canadian American, immigrant, medical doctor, and Republican politician. He was a member of the Wisconsin State Assembly, representing Grant County during the 1872 session. He also served as a hospital steward and surgeon in the Union Army during the American Civil War.
Ferrin was born on January 19, 1831, in what is now Saint-Thomas, Quebec. He graduated from Rush Medical College.[1] During the American Civil War, Ferrin originally enlisted with the 32nd Wisconsin Infantry Regiment of the Union Army. He later became a surgeon in Wingville, Wisconsin[2] and was commissioned First Assistant Surgeon of the 44th Wisconsin Infantry Regiment.
Ferrin was a member of the Assembly during the 1872 session.[3] He was a Republican.