| Nicolas Rostoucher | |
| Fullname: | Nicolas Rostoucher |
| Strokes: | Freestyle, individual medley |
| Birth Date: | 15 February 1981 |
| Birth Place: | Colmar, Haut-Rhin, France |
Nicolas Rostoucher (born 15 February 1981 in Colmar, Haut-Rhin) is a freestyle and medley swimmer from France, who is on the French National Swimming Team since 2000. He has competed for his native country at three consecutive Summer Olympics, starting in 2000. In 2001 he won his first international medal at the Mediterranean Games in Tunis: gold in the 400 m individual medley.