Marcel Reinier Wouda (born 23 January 1972) is a former Dutch swimmer, who became the first Dutch world champion in men's swimming when he won the world title in the 200 m individual medley at the 1998 World Aquatics Championships in Perth, Australia. He was the coach of Olympic champions Maarten van der Weijden and Hinkelien Schreuder at the Nationaal Zweminstituut Eindhoven.