All around the world, Masahisa (昌久 
, 正久 , Masahisa 
) is quite a rare boy's forename. The forename Masahisa is habitual in China, where it is a rare masculine name, Japan, where it is a very rare boy's name, and Brazil, where it is an extremely rare feminine name. Very seldom, Masahisa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 正久, 昌久 | China |
| Masahisa | Japan, China, United States, India, Brazil |
| amago masahisa (b. 1488) |
|
|
| hatakeyama masahisa (b. 1533) |
|
|
| matsudaira masahisa daimyo of Otaki (b. 1659) |
|
|
| masahisa isogai (b. 1679) |
|
|
| masahisa kawabe (b. 1901) |
|
|
| masahisa adachi born:1932-02-07|died:1993|; 足立, 正久, 1932-1993; Adachi, Masahisa; 足立, 正久 (b. 1932) |
|
|
| masahisa suzuki (b. 1969) |
|
|
| masahisa katsuno researcher |
|
|
| masahisa hasegawa botanist |
|
|
| masahisa horiuchi researcher |
|
|
| masahisa nakada researcher |
|
|
| masahisa wada scientist, JP |
|
|
| masahisa ishibashi researcher |
|
|
| masahisa ohkuma researcher |
|
|
| masahisa osawa researcher |
|