Family name Feilen (Feilen 
) , all over the world, is quite a rare last name. The cognomen Feilen is habitual in Luxembourg, where it is quite a rare surname, Germany, where it is a rare surname, and Australia. Measured by absolute frequency, it is commonest in Germany, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Feilen | Australia, Germany, Luxembourg, France, United States |
| jean-baptist feilen Righteous Among the Nations, DE (b. 1904) |
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| petra feilen German actress, DE (b. 1978) |
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| katie l feilen researcher |
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