| Joseph Arthur Calixte Éthier | |
| Constituency Mp: | Two Mountains |
| Parliament: | Canadian |
| Predecessor: | Joseph Girouard |
| Successor: | The electoral district was abolished in 1914. |
| Term Start: | 1896 |
| Term End: | 1917 |
| Constituency Mp2: | Laval—Two Mountains |
| Parliament2: | Canadian |
| Predecessor2: | The electoral district was created in 1914. |
| Successor2: | Liguori Lacombe |
| Term Start2: | 1917 |
| Term End2: | 1925 |
| Birth Date: | 26 May 1868 |
| Birth Place: | St-Benoît, Quebec |
| Party: | Liberal |
Joseph Arthur Calixte Éthier, (May 26, 1868 - August 14, 1936) was a Canadian politician.
Born in St-Benoît, Quebec, the son of J. B. Éthier and Julie Boyer, Éthier was educated at Montreal College. A lawyer, he was called to the Quebec Bar in 1895 and was created a King's Counsel in 1906. He was Deputy-prothonotary for the District of Terrebonne from 1888 to 1895 and was a Crown Prosecutor for that District in 1901. He was mayor of Sainte-Scholastique, Quebec from 1899 to 1906. He was first elected to Canadian Parliament at the general elections of 1896 for the riding of Two Mountains winning by 17 votes. A Liberal, he was re-elected in every following election including the 1921 election. He did not run in 1925.
By-election: On election being declared void, 6 August 1902