Cognomen Kusmadi (Kusmadi 
) , all around the world, is quite a rare family name. The cognomen Kusmadi is habitual in Indonesia, where it is a rare surname, Malaysia, where it is a very rare surname, and Australia. Also, Kusmadi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kusmadi | Indonesia, Malaysia, Australia, United States, India |