| Jean-Baptiste Blanchet | |
| Constituency Mp: | St. Hyacinthe |
| Parliament: | Canadian |
| Predecessor: | Michel-Esdras Bernier |
| Successor: | Aimé Majorique Beauparlant |
| Term Start: | 1904 |
| Term End: | 1904 |
| Birth Date: | 1842 |
| Birth Place: | Saint-Damase, Canada East |
| Death Date: | August 31, 1904 |
| Nationality: | British subject |
| Party: | Liberal Party |
| Occupation: | lawyer |
Jean-Baptiste Blanchet (October 1842 - August 31, 1904) was a Canadian politician. Born in Saint-Damase, Canada East, he was elected to the House of Commons of Canada in a 1904 by-election as a Member of the Liberal Party to represent the riding of St. Hyacinthe. He died in office while having served for just 198 days. He was also an alderman for Saint-Hyacinthe, Quebec.