Cognomen Цутому (Tsutomu 
, Цутому 
) , in the world, is quite a common last name. The cognomen Цутому is characteristic of Japan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Singapore. In absolute terms, the name is most common in Japan, China, and Indonesia. Also, Цутому is the forename as well as the last name.