Family name Iwaschtschenko (Иващенко 
, Iwaschtschenko 
) , throughout the world, is a common last name. The cognomen Iwaschtschenko is habitual in Russia, where it is quite a common surname, Kazakhstan, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Иващенко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Iwaschtschenko | Austria, United States |
Ivashchenko, and Іващенко