Cognomen Izau (Izau 
) , globally, is a rare last name. The cognomen Izau is characteristic of Latin America and the Caribbean, particularly Brazil, where it is a rare surname, Mexico, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Brazil, Mexico, and Nigeria. Also, Izau is the forename as well as the last name.