Robert ("Rob") Hubert Maria de Wit (born 7 August 1962 in Eindhoven, North Brabant) is a retired decathlete from the Netherlands. He competed in two consecutive Summer Olympics for his native country, starting in 1988 and is still holding the Dutch national record of 8.447 points in the declathon, achieved in 1988.
In 1994 De Wit participated in the 1994 Winter Olympics in Lillehammer, Norway, as a member of the Dutch bobsledding team, finishing in 24th place in the two-mans discipline.