Last name Исаму (Isamu 
, Исаму 
) , across the world, is quite a common surname. The surname Исаму is habitual in Japan, where it is quite a rare surname, Israel, where it is a rare surname, and Indonesia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Japan, China, and Indonesia. Much less frequently, Исаму is the forename as well as the last name.