| Fabien Boisvert | |
| Constituency Mp: | Nicolet |
| Parliament: | Canadian |
| Predecessor: | Athanase Gaudet |
| Successor: | Joseph Hector Leduc |
| Term Start: | 1888 |
| Term End: | 1896 |
| Birth Date: | June 21, 1839 |
| Birth Place: | Bécancour, Lower Canada |
| Death Date: | November 12, 1897 |
| Death Place: | Unknown |
| Nationality: | British subject |
| Spouse: | Marie Philomene Hamel |
| Party: | Independent Conservative Party |
| Occupation: | farmer |
Fabien Boisvert (June 21, 1839 – November 12, 1897) was a politician, land surveyor and farmer. He was elected to the House of Commons of Canada in an 1888 by-election as an independent Conservative-affiliated Member to represent the riding of Nicolet after the death of Athanase Gaudet. He was re-elected in 1896.
He was the son of Dominique Boisvert and was educated at the Séminaire de Nicolet. In 1867, he married Marie Philomene Hamel. Boisvert also served as president of the local school board. He died in office at the age of 58.