Surname Imasu (Imasu 
) , across the world, is a rare family name. The cognomen Imasu is habitual in Japan, where it is a rare surname, Nigeria, where it is an extremely rare surname, and Brazil. In absolute terms, it is commonest in Japan, Nigeria, and India. Much less frequently, Imasu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Imasu | Nigeria, Brazil, United States, India, Japan |
| ryoichi imasu researcher |
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