Family name Kostiushin (Kostiushin, Костюшин 
) , throughout the world, is a rare cognomen. The last name Kostiushin is habitual in Eastern Europe, particularly Russia, where it is a rare surname, Ukraine, and Belarus. In absolute terms, this name is the most popular in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Костюшин | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |