Surname Wirjadi (Wirjadi 
) , around the world, is a rare family name. The surname Wirjadi is habitual in Indonesia, where it is a rare surname, Netherlands, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in Indonesia, the United States, and Malaysia. Much less frequently, Wirjadi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wirjadi | Netherlands, Indonesia, Malaysia, United States |
| oliver wirjadi researcher |
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| oliver wirjadi Dr. rer. nat. Technische Universität Kaiserslautern 2009 |
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