Surname イズミ (イズミ 
, Izumi 
) , across the world, is a common family name. The surname イズミ is characteristic of Guam, where it is quite a common surname, Japan, and Hong Kong, where it is a rare surname. In absolute terms, the name is most common in Japan, Brazil, and Indonesia. Likewise, イズミ is the forename as well as the last name.