Cognomen Alff (Alff 
) , around the globe, is quite a rare surname. The surname Alff is habitual in Western Europe, particularly Luxembourg, where it is quite a rare surname, Germany, where it is a rare surname, and Austria. Measured by absolute frequency, it is the most numerous in Germany, Brazil, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Alff | Germany, Saudi Arabia, United States, France, Brazil |
| peter alff (1806-1857) (b. 1806) |
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| franz alff DE (b. 1800) |
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| maximin alff priest (b. 1866) |
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| paul van alff NL (b. 1878) |
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| richard alff German judge, DE (b. 1915) |
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| wilhelm alff German historian (1918-1992), DE (b. 1918) |
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| eberhard alff PL (b. 1938) |
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| richard alff DE (b. 1943) |
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| harald alff DE (b. 1963) |
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| estelle alff Luxembourgian basketball player, LU (b. 1979) |
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| carolina costa alff botanist |
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