Cognomen Kusumadi (Kusumadi 
) , across the world, is a rare family name. The surname Kusumadi is characteristic of South-eastern Asia, particularly Singapore, where it is a rare surname, Indonesia, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Indonesia, Singapore, and China. Very seldom, Kusumadi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kusumadi | China, Indonesia, Singapore, United States, India |