| John Hay | |
| Office: | Member of the Legislative Assembly of Quebec for Argenteuil |
| Successor: | Harry Slater |
| Term Start: | 1910 |
| Term End: | 1912 |
| Successor2: | Joseph-Léon Saint-Jacques |
| Term Start2: | 1916 |
| Term End2: | 1925 |
| Birth Date: | 26 June 1862 |
| Birth Place: | Chatham, Canada East |
| Death Place: | Lachute, Quebec |
| Party: | Liberal |
John Hay (June 26, 1862 - January 16, 1925) was a Canadian politician.
Born in Chatham, Canada East, Hay was a farmer. He was mayor of Lachute from 1907 to 1909. He ran unsuccessfully for the Legislative Assembly of Quebec in the riding of Argenteuil in 1892. He was elected in a 1910 by-election and was defeated in 1912. A Liberal, he was elected in 1916 and served until his death in 1925 in Lachute.