Last name Kurumi (Kurumi 
, 来海 , クルミ ) , all over the world, is a common family name. The last name Kurumi is habitual in Japan, where it is quite a common surname, Indonesia, where it is a very rare surname, and Nigeria. In absolute terms, it is the most numerous in Japan, India, and Indonesia. Much less frequently, Kurumi is the forename as well as the last name.