Nijs Korevaar
| Olympic medal record | ||
|---|---|---|
| Men's Water Polo | ||
Competitor for  Netherlands
| ||
| Bronze | 1948 London | Team competition |
Nijs Cornelis Korevaar (born 31 December 1927, Mijnsheerenland) is a Dutch water polo player who competed in the 1948 Summer Olympics and in the 1952 Summer Olympics.
In 1948 he was a member of the Dutch water polo team which won the bronze medal. He played all seven matches and scored four goals.
Four years later he finished fifth with the Dutch team in the water polo tournament at the 1952 Games. He played all nine matches and scored at least three goals (not all scorers are known).
Korevaar is the younger brother of the mathematician Jacob Korevaar.