Last name Izai (Izai 
, Изай 
) , in all the world, is a rare surname. The surname Izai is habitual in the Democratic Republic of the Congo, where it is a rare surname, Honduras, and Mexico, where it is a very rare surname. Measured by absolute frequency, the name is most common in the Democratic Republic of the Congo, Mexico, and Russia. Also, Izai is the forename as well as the last name.