Jacob "Jaap" Korevaar (born 25 January 1923) is a Dutch mathematician.
Korevaar became a member of the Royal Netherlands Academy of Arts and Sciences in 1975.
[1] He won the 1987 Lester R. Ford Award, and the 1989 Chauvenet Prize, for an essay on Louis de Branges de Bourcia's proof of the Bieberbach conjecture.
[2] In 2012, he became a fellow of the American Mathematical Society.
[3] Korevaar is the older brother of the Olympic water polo player Nijs Korevaar.