Cognomen Soika (Soika 
, Сойка 
) , all over the world, is quite a rare surname. The last name Soika is habitual in Latvia, where it is quite a rare surname, Germany, and Ukraine, where it is a rare surname. Measured by absolute frequency, the name is most common in Germany, Ukraine, and the United States. Very seldom, Soika is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soika | Germany, Poland, Brazil, United States, Romania |
| Сойка | Kazakhstan, Ukraine, Belarus, Kyrgyzstan, Russia |
| isidor soika CZ (b. 1850) |
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| antonio giordani soika Italian entomologist (1913-1997), IT (b. 1913) |
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| dieter soika German journalist, DE (b. 1949) |
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| karin ulrike soika German artist, DE (b. 1966) |
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| erkki soika researcher |
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| grażyna soika Polish acarologist, PL |
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| klaus dieter soika Dr. rer. nat. Rheinisch-Westfälische Technische Hochschule Aachen 1973 |
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| aya soika (b. 1975) |
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| tobias soika |
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| ursula soika |
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Mr, Beth, Paul, Rosa, Rony, Dana, Dave, Dirk, Gerd, Lars, Lisa, Liza, Lucy, Jose, John, Jona, Jenn, Teri, Tina, Nick, Neil, Elsi, Arek, Elke, Anne, Sara, Ms, Sam, Sã, Ali, Ana, Kai, Kim, Pat, Pam, Rui, Lea, Lou, Jan, Joe, Jen, Tom, Uwe, Mary, Mark, Maik, Mike, Anna, and Eric