Cognomen Tokumaru (Tokumaru 
, Токумару 
) , in the world, is a rare surname. The family name Tokumaru is characteristic of Denmark, where it is a very rare surname, Belgium, and Peru. Not in comparison with a country's population, it most frequently occurs in Japan, the United States, and Brazil. More frequently, Tokumaru is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tokumaru | Japan, China, Brazil, United States, Peru |
| Токумару | Russia |
| tadasu tokumaru (b. 1928) |
|
|
| yoshihisa tokumaru researcher |
|
|
| osamu tokumaru researcher (ORCID 0000-0002-4179-7154) |
|
|
| yutaka tokumaru researcher |
|
|
| teppei tokumaru researcher |
|
|
| phillip takeo tokumaru Ph.D. California Institute of Technology 1991 |
|