Last name Knupfer (Knupfer 
) , across the world, is quite a rare surname. The last name Knupfer is characteristic of Germany, where it is quite a rare surname, Switzerland, where it is a rare surname, and Romania. Measured by absolute frequency, it is the most numerous in Germany, Brazil, and the United States. Very seldom, Knupfer is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Knupfer | Romania, Germany, Brazil, United States, Switzerland |
| eugen knupfer DE (b. 1876) |
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| edy knupfer Swiss architect (1912-1979), CH (b. 1912) |
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olivier knupfer Swiss karateka, CH (b. 1965) |
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antonia knupfer German association football player, DE (b. 1992) |
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| katja knupfer (b. 1968) |
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Mr, Lisa, Luca, Luiz, Jana, Jose, Joao, Nick, Elin, Ella, Eder, Egon, Hans, Hugo, Ilda, Ilma, Osni, Yago, Zely, Maria, Marco, Sarah, Leta, Lara, Gian, Dora, Ms, Max, Ana, Ann, Rai, Rui, Ivo, Oto, Mark, Anna, Simon, Anne, Beat, Karl, Paul, Rosa, Rolf, Rick, Rita, Ruth, Rudy, Ryan, Cori, and Susan