| Joseph Octave Lavallée | |
| Constituency Mp: | Bellechasse |
| Parliament: | Canadian |
| Predecessor: | Onésiphore-Ernest Talbot |
| Successor: | Charles-Alphonse Fournier |
| Term Start: | 1911 |
| Term End: | 1916 |
| Birth Date: | 1878 2, df=y |
| Birth Place: | Berthier, Quebec, Canada |
| Death Place: | Montreal, Quebec, Canada |
| Spouse: | Maria Demers (m. 24 Jun 1901) |
| Party: | Conservative |
| Alma Mater: | Séminaire de Joliette |
| Occupation: | journalist |
Joseph-Octave Lavallée (21 February 1878 – 10 September 1940) was a journalist and political figure in Quebec. He represented Bellechasse in the House of Commons of Canada from 1911 to 1916 as a Conservative.
He was born in Berthier, Quebec, the son of Octave Lavallée and Philomène Champagne, and was educated at the Séminaire de Joliette. Lavallée lived in St-Cajetan d'Armagh. In 1901, he married Maria Demers at Berthierville, Quebec.[1] He was a director of the Strathcona Assurance Company and Blais Co. Ltd. Lavallée resigned his seat in the House of Commons in 1916 to run unsuccessfully for a seat in the Legislative Assembly of Quebec.[2]