| Sergio Mangín | |
| Birth Date: | June 28, 1973 |
| Nationality: | Argentine |
| Occupation: | sprint canoer |
| Notable Works: | 1996 Summer Olympics |
Sergio Mangín (born June 28, 1973) is an Argentine sprint canoer who has competed in the mid-1990s. At the 1996 Summer Olympics in Atlanta, he was eliminated in the semifinals of the K-2 500 m event.