| J-Arthur Denis | |
| Birthname: | Joseph-Arthur Denis |
| Birth Date: | 1881 4, df=yes |
| Birth Place: | Saint-Norbert, Quebec, Canada |
| Death Place: | Lac-Rouge, Quebec, Canada |
| Spouse: | Ottawa Gagnon m. 26 June 1907[1] |
| Constituency Mp: | St. Denis |
| Parliament: | Canadian |
| Predecessor: | Alphonse Verville |
| Successor: | Azellus Denis |
| Term Start: | December 1921 |
| Term End: | October 1934 |
| Profession: | physician |
| Party: | Liberal |
Joseph-Arthur Denis (26 April 1881 - 1 October 1934) was a Liberal party member of the House of Commons of Canada. He was born in Saint-Norbert, Quebec in Berthier County and became a physician.
The son of Arsène Denis and Georgiana Laporte,[2] Denis attended Joliette College, then Université Laval. He practised medicine at Notre-Dame-des-Bois and Montreal.[2]
He was first elected to Parliament at the St. Denis riding in the 1921 general election then re-elected in1925, 1926 and 1930. Denis died on 1 October 1934 before he was able to complete his fourth term, the 17th Canadian Parliament. His brother Azellus succeeded him as member for St. Denis.