Cognomen Fajfer (Fajfer 
, Пфайффер 
, Файфер 
) , throughout the world, is quite a rare last name. The family name Fajfer is habitual in Poland, where it is quite a rare surname, Croatia, and Serbia, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Poland, Ukraine, and Russia. Also, Fajfer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fajfer | Slovakia, Croatia, France, Poland, Serbia |
| Пфайффер | Ukraine, Russia, Kazakhstan |
| Файфер | Ukraine, Russia, Kyrgyzstan, Kazakhstan |
| jan fajfer (b. 1500) |
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| adam ryszard fajfer [occupation:Kulturhausdirektor; Dichter] [dates:1943] [archive:Polskie Archiwum Biograficzne] (b. 1943) |
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| zdeněk fajfer CZ (b. 1938) |
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| tadeusz fajfer Polish association football player, PL (b. 1959) |
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| tomasz fajfer Polish speedway rider, PL (b. 1969) |
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| adam fajfer Polish speedway rider, PL (b. 1973) |
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| zenon fajfer (b. 1970) |
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| monika fajfer Polish acarologist, PL |
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| monika fajfer researcher (ORCID 0000-0002-2678-9105) |
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| piotr fajfer (b. 1977) |
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| janusz fajfer |
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| maciej fajfer Polish speedway rider, PL (b. 1991) |
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| łukasz fajfer PL (b. 1983) |
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| oskar fajfer Polish speedway rider, PL (b. 1994) |
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