| Smallimage: | HectorAuthier.jpg |
| Term Start: | 1940 |
| Term End: | 1945 |
| Predecessor: | François Blais |
| Successor: | David Gourd |
| Birth Date: | 4 November 1881 |
| Birth Place: | Ange-Gardien, Quebec, Canada |
| Death Place: | Montreal, Quebec, Canada |
| Profession: | lawyer, news reporter/announcer |
| Party: | Liberal |
| Constituency Mp: | Chapleau |
| Parliament: | Canadian |
| Office2: | Member of the Legislative Assembly of Quebec for Abitibi |
| Predecessor2: | Joseph-Édouard Perrault |
| Successor2: | Émile Lesage |
| Term Start2: | 1923 |
| Term End2: | 1936 |
Hector Authier (November 4, 1881 - April 14, 1971) was a Canadian politician, lawyer and news reporter/announcer.
He was born on November 4, 1881, in Ange-Gardien, Quebec.
He served as the first Mayor of Amos, Quebec, in 1914, for a one-year term.
Authier won a by-election in 1923 and became the Liberal Member of the Legislative Assembly (MLA) for the provincial district of Abitibi. He was re-elected in the 1927, 1931 and 1935 elections.
He served as Deputy Speaker of the House from 1935 to 1936 and was a Member of the Cabinet as the Minister of Colonization by 1936. He did not run for re-election in the 1936 election.
He was elected to the House of Commons of Canada in 1940 as a Member of the Liberal Party representing the riding of Chapleau.
He died on April 14, 1971, in Montreal.
The municipalities of Authier and Authier-Nord are named after him.