| Jean-Christophe Sarnin | |
| Fullname: | Jean-Christophe Sarnin |
| Strokes: | Breaststroke |
| Club: | Alliance Dijon Natation |
| Birth Date: | 2 April 1976 |
| Birth Place: | Lyon, Rhône-Alpes, France |
| Weight: | 80kg (180lb) |
Jean-Christophe Sarnin (born 2 April 1976 in Lyon, Rhône) is a retired male breaststroke swimmer from France, who represented his native country at the 1996 Summer Olympics in Atlanta, United States. He won the silver medal in the men's 200m breaststroke at the 1998 World Aquatics Championships in Perth, Australia.