Last name Knackfuss (Knackfuss 
) , throughout the world, is a rare surname. The surname Knackfuss is habitual in Germany, where it is a very rare surname, Brazil, and Argentina. Much less frequently, Knackfuss is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Knackfuss | Germany, Argentina, Spain, Brazil |
| elise knackfuss (b. 1817) |
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| emma knackfuss (1831-1904) (b. 1831) |
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| eduard heinrich knackfuss German priest and painter (1858-1945), DE (b. 1858) |
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| ana cláudia u knackfuss researcher |
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| angela knackfuss |
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Mr, Nelir, Henry, Henny, Hilda, Irony, Irocy, Oscar, Maximo, Sandra, Silvia, Sergio, Ademir, Carlos, Braian, Renato, Renata, Debora, Daniel, Thiago, Felipe, Mariana, Taisa, Lucia, Laura, Diego, Ana, Ney, Anna, Cyro, Laci, Joao, Elsa, Emyr, Ivan, Olga, Marcelo, Maria, Mauro, Sueli, Alice, Aline, Almir, Aldir, Aracy, Paula, Paulo, Darcy, Maira, and Marlene