Kool is a Dutch patronymic surname.
Kool (Dutch pronunciation: [koːl]) is an archaic short form of the given name Nicolaas.
[1] Since "kool" means both "cabbage" and "coal" in modern Dutch, for some families the name could conceivably have originated as a metonymic occupational surname, referring to a cabbage farmer or seller, or coal worker.
[2] Among variant forms are Coolen, Cools, Koole, Koolen and Kools.
People with the surname include: