Last name Katkus (Katkus 
) , all around the world, is a rare cognomen. The cognomen Katkus is habitual in Lithuania, where it is quite a common surname, Denmark, where it is a rare surname, and the United States, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Lithuania, the United States, and Germany.
| VARIANT | COUNTRY |
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| Katkus | Germany, United States, United Kingdom, Lithuania, Denmark |
| mikalojus katkus LT (b. 1852) |
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| juozapas katkus LT (b. 1918) |
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| juozapas algirdas katkus Lithuanian politician, LT (b. 1936) |
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| valdemaras katkus Lithuanian politician, LT (b. 1958) |
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| vytautas katkus cinematographer and film director |
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Mr, Tomas, Nancy, Marian, Marius, Mantas, Steven, Kostas, Kęstutis, Robert, Rowina, George, Louise, Justas, Thomas, Nistor, Neilas, Erikas, Valdas, Vaidas, Ugnius, Michael, James, Larry, Laura, Diana, Al, Jim, Kory, Paul, Rena, Debi, Dara, Gene, Lisa, Jane, Mykolas, John, Maria, Megan, Shane, Scott, Annie, Chris, Betty, Kevan, Randy, Rokas, Judy, and Saulius