Cognomen Koesmadji (Koesmadji 
) , globally, is a rare last name. The family name Koesmadji is characteristic of South-eastern Asia, particularly Indonesia, where it is a very rare surname. Very seldom, Koesmadji is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koesmadji | Indonesia |
|
adipati koesmadji Indonesian actor, ID (b. 1991) |
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| adipati koesmadji actor (b. 1991) |
|