| Louis Adolphe Billy | |
| Constituency Mp: | Rimouski |
| Parliament: | Canadian |
| Predecessor: | Jean-Baptiste Romuald Fiset |
| Successor: | Jean-Baptiste Romuald Fiset |
| Term Start: | 1882 |
| Term End: | 1887 |
| Birth Date: | October 13, 1834 |
| Birth Place: | Gentilly, Lower Canada |
| Death Date: | March 20, 1907 |
| Nationality: | British subject |
| Party: | Conservative Party |
| Occupation: | lawyer |
Louis Adolphe Billy (October 13, 1834 in Gentilly, Lower Canada – March 20, 1907) was a Quebec born politician and lawyer. He was elected to the House of Commons of Canada in 1882 as a Member of the Conservative Party to represent the riding of Rimouski.