Cognomen Kostochka (Kostochka 
) , worldwide, is a very rare last name. The surname Kostochka is habitual in Russia, where it is an extremely rare surname, Germany, and Canada. Measured by absolute frequency, it is the most numerous in Russia, the United States, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Kostochka | Germany, Ukraine, Canada, United States, Russia |
| alexandr kostochka Ph.D. Novosibirsk State University 1978 |
|