Nicolas Rostoucher
FullnameNicolas Rostoucher
StrokesFreestyle, individual medley
Birth date15 February 1981 (age 45)
Birth placeColmar, Haut-Rhin, France
Height1.87 m (6 ft 2 in)

Nicolas Rostoucher (born 15 February 1981 in Colmar, Haut-Rhin) is a freestyle and medley swimmer from France who has been 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.