Surname Maruiwa (Maruiwa 
) , around the world, is an extremely rare cognomen. The last name Maruiwa is characteristic of Brazil, where it is an extremely rare surname, and the United States. Also, Maruiwa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maruiwa | China, Brazil, United States |