| Philippe Gagnon | |
| Birth Date: | 9 May 1909 |
| Birth Place: | Bégon, Quebec |
| Death Place: | Saint-Michel-du-Squatec, Quebec |
| Spouse: | Therese Beaulieu (m. 24 Jul 1935)[1] |
| Riding: | Rivière-du-Loup—Témiscouata |
| Term Start: | September 1962 |
| Term End: | April 1963 |
| Predecessor: | Antoine Fréchette |
| Successor: | Rosaire Gendron |
| Profession: | agent, farmer, salesman |
| Party: | Social Credit |
Louis-Philippe Gagnon (9 May 1909 – 19 September 2001) was a Social Credit party member of the House of Commons of Canada. Born in St-Jean-de-Dieu, Quebec, he was an agent, farmer and salesman by career.
He was first elected at the Rivière-du-Loup—Témiscouata riding in the 1962 general election. After serving only one short term, the 25th Parliament, Gagnon was defeated in the 1963 federal election by Rosaire Gendron of the Liberal party. Gagnon attempted to unseat Gendron in the 1968 and 1972 elections but was unsuccessful on those occasions. He died in 2001.[2]