Cognomen Wihardja (Wihardja 
) , globally, is quite a rare last name. The family name Wihardja is habitual in Indonesia, where it is quite a rare surname, Singapore, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, Australia, and China. Much less frequently, Wihardja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wihardja | Australia, China, United States, Singapore, Indonesia |
| hadi wihardja Indonesian weightlifter (b. 1962) |
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| buddy wihardja ID (b. 1957) |
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| steavanus wihardja Indonesian short track speed skater, ID |
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Mr, Iwan, Zara, Maria, Mario, Melly, Sonny, Andre, Andry, Anton, Feny, Ciska, Padli, Randy, Ronny, Rendy, Ricky, Dessy, Derry, Darma, David, Bryan, Djaya, Heny, Hany, Ms, Max, Ron, Roy, Jos, Edy, Mans, Susy, Anna, Hadi, Boby, Reza, Rini, Rudy, Dewi, Dedi, Gita, Tony, Teza, Erra, Bram, and Gayus