Cognomen Wilka (Wilka 
) , globally, is a rare last name. The last name Wilka is habitual in Germany, where it is a rare surname, Venezuela, where it is a very rare surname, and Nicaragua. Not in comparison with a country's population, the name is most common in Germany, the United States, and Indonesia. More frequently, Wilka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wilka | Brazil, United States, Dominican Republic, Germany, Namibia |
| william wilka Paraguayan Olympic shooter, PY (b. 1947) |
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| patricia wilka Olympic pistol shooter, PY (b. 1972) |
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| catherine wilka researcher, ORCID id # 0000-0002-2917-1140 |
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| wilka m n silva researcher |
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| ada wilka |
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| wilka mwatile Namibian cricketer |
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Paz, Miranda, Santana, Almeida, Andrade, Barbosa, Batista, Bezerra, Pereira, Freitas, Queiroz, Monteiro, Medeiros, Santiago, Silveira, Carvalho, Nogueira, Ferreira, Oliveira, Rodriguez, Rodrigues, Guimaraes, Marques, Farias, Pessoa, Barros, Melo, Reis, Dias, Lima, Moura, Silva, Sousa, Souza, Alves, Abreu, Cavalcanti, Costa, Karla, Ramos, Rocha, Gomes, Lopes, Morais, Santos, Soares, Araujo, Castro, Brito, and Nascimento