Surname Rumbiak (Rumbiak 
) , all over the world, is quite a rare last name. The family name Rumbiak is habitual in Indonesia, where it is quite a rare surname, and Australia, where it is a very rare surname. Very seldom, Rumbiak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rumbiak | Australia, United States, Indonesia |
| jacob rumbiak Indonesian academic, ID (b. 1955) |
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| terianus rumbiak Indonesian politician (born 1959 in Biak), ID (b. 1959) |
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| john rumbiak Indonesian activist, ID (b. 1962) |
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| franklin rumbiak footballer, ID (b. 1989) |
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| imanuel rumbiak Indonesian footballer, ID (b. 1998) |
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| chris rumbiak Indonesian footballer, ID |
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Rio, Anthon, Annita, Amelia, Paulus, Petrus, Ronald, Regina, Gerson, Natrius, Norman, Novita, Eduard, Edward, Herman, Hengky, Hellen, Wijaya, Yansen, Zadrak, Utreck, Marthen, Sandra, Matheus, Merlin, Yonas, Yan, Rein, Reza, Ruth, Dhea, Janz, John, Erni, Icha, Arvin, Billy, Kevin, Riano, David, Dixon, Donna, Larry, Jacob, Titin, Frank, Ishac, Yosep, and Sarlota