Surname Jankus (Jankus 
) , around the world, is a rare cognomen. The last name Jankus is characteristic of Lithuania, where it is quite a common surname, Hungary, where it is a rare surname, and Norway. Measured by absolute frequency, the name is most common in Lithuania, Germany, and the United States. Much less frequently, Jankus is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jankus | Germany, Brazil, United States, Hungary, Lithuania |
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martynas jankus Lithuanian politician, LT (b. 1858) |
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| jonas jankus LT (b. 1888) |
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| oskars jankus Latvian politician (1905-1937), LV (b. 1905) |
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| jurgis jankus Lithuanian writer, LT (b. 1906) |
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| augustinas jankus Lithuanian Righteous Among the Nations, LT (b. 1914) |
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| lionginas jankus (b. 1912) |
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| hank jankus (b. 1929) |
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| linas julijonas jankus Lithuanian academic, LT (b. 1946) |
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| gediminas jankus Lithuanian politician, LT (b. 1951) |
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| karolis jankus Lithuanian film director, LT (b. 1974) |
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| marcus jankus college basketball player (2000–2001) Northern Illinois |
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| andrius jankus badminton player, LT (b. 1981) |
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Mr, Lisa, Jose, John, Nara, Isis, Otto, Odir, Ward, Maria, Marco, Matas, Milda, Susan, Steve, Almis, Anita, Agnes, Chase, Chris, Bryan, Patty, Lila, Lina, Gerd, Gail, Ms, Ed, Ana, Ann, Jay, Jon, Tom, Ian, Mary, Mark, Peter, Alex, Anna, Adam, Chad, Beth, Paul, Pete, Rita, Ruby, Dana, Dave, Alma, and Pedro