| Birth Date: | 1961 3, df=yes |
| Birth Place: | Rotterdam, the Netherlands |
| Height: | 1.84m (06.04feet) |
| Weight: | 73kg (161lb) |
| Sport: | Sprint |
| Club: | AV Haarlem |
| Show-Medals: | yes |
Marinus "Mario" Westbroek (born 11 March 1961) is a retired Dutch sprinter. He competed in the 100 m and 4 × 400 m relay at the 1980 Summer Olympics, but failed to reach the finals.