All over the world, Ilkka (Ilkka 
, Илкка 
, Ілкка 
) is quite a rare boy's first name. The first name Ilkka is habitual in Finland, where it is quite a common male name, Sweden, where it is a rare male name, and the United States, where it is an extremely rare predominantly boy's, but scarcely girly name. Likewise, Ilkka is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ilkka | Japan, Sweden, Austria, United States, Finland |
| Илкка | Russia |
| Ілкка | Ukraine |
| ايلكا | Iran |
| jaakko pentinpoika ilkka Finnish trader, Cudgel War leader, FI (b. 1550) |
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ilkka väänänen Finnish physician (1915-1987), FI (b. 1915) |
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ilkka laitakari Finnish geologist (1929-1996), FI (b. 1929) |
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ilkka koivisto Finnish zoologist and biologist (1932-2012), FI (b. 1932) |
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ilkka kuusisto Finnish composer, FI (b. 1933) |
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ilkka alitalo Finnish professor, FI (b. 1934) |
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ilkka juhani takalo-eskola Finnish painter, FI (b. 1937) |
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ilkka suominen Finnish politician (1939-2022), FI (b. 1939) |
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ilkka taipale Finnish politician and psychiatrist, FI (b. 1942) |
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ilkka nummisto Finnish canoeist and strength athlete (1944-2019), FI (b. 1944) |
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ilkka kylävaara Finnish journalist, director and writer, FI (b. 1946) |
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ilkka niiniluoto Finnish philosopher and mathematician, FI (b. 1946) |
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ilkka ilkare Finnish film actor, FI (b. 1947) |
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ilkka armas mikael kanerva Finnish politician, FI (b. 1948) |
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ilkka rautio Finnish judge, FI (b. 1950) |
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Ki, Kauppinen, Korhonen, Koskinen, Kinnunen, Rantanen, Laitinen, Lehtonen, Lehtinen, Tuominen, Aaltonen, Nieminen, Virtanen, Penttilä, Rautiainen, Järvinen, Heiskanen, Heikkilä, Heikkinen, Hänninen, Savolainen, Holopainen, Seppälä, Suominen, Saarinen, Aho, Nen, Salo, Inen, Soini, Koski, Laine, Niemi, Kallio, Mattila, Mäkelä, Salonen, Koivisto, Räsänen, Jaakkola, Huttunen, Hyttinen, Manninen, Mustonen, Mäkinen, Salminen, Kemppainen, and Hämäläinen