| Jordan Mattern | |
| Fullname: | Jordan Mattern |
| Strokes: | Freestyle |
| Club: | Colorado Stars Club |
| Coach: | Todd Schmitz |
| Collegeteam: | University of Georgia |
| Birth Date: | February 1, 1993 |
| Birth Place: | Aurora, Colorado |
| Weight: | 640NaN0 |
Jordan Mattern (born February 1, 1993) is an American swimmer who specializes in middle-distance freestyle events. At the 2013 World Aquatics Championships in Barcelona, Mattern won a gold medal as a member of the winning U.S. team in the women's 4×200-metre freestyle. She attends the University of Georgia, where she swims for coach Jack Bauerle's Georgia Bulldogs swimming and diving team. She is currently married to fellow UGA Alum and former Olympian, Andrew Gemmell.