| Birth Date: | 7 August 1840 |
| Death Place: | Lyon |
| Othername: | Marius Canard |
| Occupation: | Journalist Playwright |
Jules Coste, called Coste-Labaume, (7 August 1840 – 9 September 1910) was a 19th-century French journalist and playwright. His pen name was Marius Canard. He was made chevalier of the Légion d'honneur (6 February 1897) and promoted officier (15 January 1908).[1]