Cognomen Иидзука (Iizuka 
, Иидзука 
) , in all the world, is quite a rare last name. The family name Иидзука is habitual in Serbia, where it is a rare surname, Singapore, and Romania. In absolute terms, it most frequently occurs in Japan, Brazil, and the United States. Likewise, Иидзука is the forename as well as the last name.