Family name Hayoon (Hayoon 
) , globally, is a very rare last name. The last name Hayoon is characteristic of Saudi Arabia, where it is a rare surname, Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Saudi Arabia, Israel, and India. Much more prevalently, Hayoon is the forename as well as the last name.