| Yves Fortier | |
| Birth Name: | Yves Oscar Fortier |
| Birth Date: | 17 August 1914 |
| Birth Place: | Quebec City, Quebec, Canada |
| Fields: | geology |
| Workplaces: | Geological Survey of Canada |
| Alma Mater: | Laval University, McGill University Stanford University, Queen's University |
| Awards: | Logan Medal, Massey Medal |
Yves Oscar Fortier, OC, FRSC (August 17, 1914 – August 19, 2014) was a Canadian geologist.[1] He was the director of the Geological Survey of Canada from 1964 to 1973. He led expeditions to the Canadian Arctic in the 1950s and 1960s which identified significant potential oil and gas resources. He died at the age of 100 on August 19, 2014.[2]