| Joseph Ernest Cyr | |
| Constituency Mp: | Provencher |
| Parliament: | Canadian |
| Predecessor: | Alphonse Alfred Clément Larivière |
| Successor: | John Patrick Molloy |
| Term Start: | 1904 |
| Term End: | 1908 |
| Office2: | Member of the Legislative Assembly of Manitoba from St. Boniface |
| Term Start2: | 1883 |
| Term End2: | 1888 |
| Birth Date: | 4 September 1854 |
| Birth Place: | Montreal, Canada East |
| Party: | Liberal |
Joseph Ernest Cyr (September 4, 1854 - April 12, 1929) was a Canadian politician.
Born in Montreal, Quebec, the son of Michel Cyr and Mary-Louise Moquin, Cyr was educated at St. Laurent College near Montreal. He moved to St. Boniface, Manitoba in 1882[1] and was mayor in 1885. A notary,[1] he was elected to the Legislative Assembly of Manitoba in an 1883 by-election held following the death of Alexander Kittson.[2] Cyr was defeated when he ran for reelection to the Manitoba assembly in 1888. He was an unsuccessful candidate for the federal riding of Provencher in 1887,[3] then was elected to the House of Commons of Canada for Provencher in 1904. In 1910, Cyr was named Superintendent of Dominion Public Works in Winnipeg.[3]
He married Adelaide Cesarine Senez in 1875.[1]