Last name Oncken (Oncken 
) , in all the world, is a rare family name. The surname Oncken is habitual in Germany, where it is a rare surname, New Zealand, and the United States, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Germany, the United States, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Oncken | Germany, Belgium, Australia, United States, Brazil |
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johann gerhard oncken German Baptist preacher (1800–1884), DE (b. 1800) |
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wilhelm oncken German historian (1838-1905), DE (b. 1838) |
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hermann oncken German historian (1869-1945), DE (b. 1869) |
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| anton wilhelm von oncken (b. 1814) |
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| august oncken German economist, DE (b. 1844) |
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| gerhard oncken DE (b. 1836) |
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| carl gerhard oncken (b. 1839) |
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| dirk oncken German diplomat, DE (b. 1919) |
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| onno oncken (b. 1914) |
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| onno oncken German geologist, DE (b. 1955) |
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| percy oncken Brazilian volleyball player, BR (b. 1960) |
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Mr, Gene, Lais, Lena, Lori, Lyle, Josh, John, Joan, Joao, Jeff, Todd, Nora, Elza, Edna, Eric, Erin, Emma, Harm, Hajo, Imke, Olga, Gerd, Gary, Dana, Ryan, Ms, Ann, Amy, Kay, Lee, Jan, Ida, Mary, Mark, Alex, Maria, Alan, Karl, Kate, Kami, Kent, Kirk, Kyle, Paul, Romy, Robt, Rick, Anne, and Mario