| Michael Cayley | |
| Constituency Mp: | Beauharnois |
| Parliament: | Canadian |
| Successor: | Ulysse-Janvier Robillard |
| Term Start: | 1867 |
| Term End: | 1872Marlon |
| Predecessor2: | Ulysse-Janvier Robillard |
| Successor2: | Joseph Gédéon Horace Bergeron |
| Term Start2: | September 17, 1878 |
| Term End2: | December 3, 1878 |
| Birth Date: | 15 May 1842 |
| Birth Place: | Kilkenny, Ireland |
| Party: | Liberal |
Michael Cayley (May 15, 1842 – December 3, 1878) was a Quebec lawyer and political figure. He represented Beauharnois in the House of Commons of Canada as a Conservative member from 1867 to 1872 and again in 1878.
He was born in Kilkenny, Ireland and educated at St. Hyacinthe, Canada East. Cayley studied law and was called to the bar in 1864.[1] He practised law in Beauharnois. He was elected to the House of Commons in 1867 but defeated in 1872. Cayley died in Montreal less than three months after being reelected in 1878 at the age of 36.[2]