Cognomen Troianenko (Troianenko, Трояненко 
) , in the entire world, is a rare last name. The surname Troianenko is habitual in Ukraine, where it is a rare surname, Belarus, and Kazakhstan, where it is a very rare surname. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Трояненко | Kazakhstan, Russia, Georgia, Belarus, Ukraine |