Last name Mainassy (Mainassy 
) , globally, is a rare family name. The family name Mainassy is characteristic of Indonesia, where it is a rare surname, and Netherlands, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mainassy | Indonesia, Netherlands |
| ferry johan mainassy Indonesian politician (born 1968 in Ambon), ID (b. 1968) |
|