Family name Kotsar (Коцарь 
, Kotsar 
, Коцар ) , all around the world, is quite a rare cognomen. The last name Kotsar is characteristic of Estonia, where it is quite a rare surname, Ukraine, and Russia, where it is a rare surname. In absolute terms, the name is most common in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Коцарь | Kyrgyzstan, Kazakhstan, Ukraine, Russia |
| Kotsar | Russia, Estonia, Bulgaria, United States, Poland |
| Коцар | Kazakhstan, Ukraine, Russia |
| Котсар | Russia |
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kustas kotsar Estonian journalist and writer, EE (b. 1872) |
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| valter kotsar Estonian diplomat, EE (b. 1903) |
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| kaarel kotsar Estonian pedagogue, EE (b. 1921) |
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| endel kotsar (b. 1930) |
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maik-kalev kotsar Estonian basketball player (1996-), EE (b. 1996) |
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| andres kotsar (b. 1974) |
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Mr, Sander, Alexey, Gunnar, Gendra, Tamara, Tõnis, Evgeny, Marina, Dmitriy, Snezhana, Kateryna, Kristjan, Vladimir, Mari-Liis, Stanislav, Aleksandr, Natalya, Olena, Irene, Irina, Ms, Kai, Mary, Anna, Kali, Gala, Vita, Inna, Ivan, Igor, Olga, Oleg, Madis, Kirke, David, Elena, Vadim, Oleksandr, and Konstantin