| Marc van Leeuwen | |
| Birth Date: | 1 May 1960 |
| Birth Place: | Castricum, Netherlands |
| Nationality: | Dutch |
| Fields: | Mathematics |
| Workplaces: | University of Poitiers |
| Alma Mater: | Utrecht University |
| Doctoral Advisor: | T. A. Springer |
Marc A. A. Van Leeuwen (born May 1, 1960) is a Dutch mathematician at the University of Poitiers. He is a project member of the atlas of Lie groups and representations.
Van Leeuwen attended the Utrecht University, where he obtained his doctorate in 1989, under supervision of T. A. Springer.