Last name Koats (Koats 
) , all over the world, is a very rare family name. The surname Koats is characteristic of Greece, where it is a very rare surname, the United States, where it is an extremely rare surname, and Canada. Not in comparison with a country's population, it is commonest in the United States, Greece, and Brazil. Very seldom, Koats is the forename as well as the last name.