Surname Troshko (Troshko 
) , all over the world, is a very rare last name. The family name Troshko is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Russia, where it is an extremely rare surname, and Ukraine. Not in comparison with a country's population, the name is most common in Belarus, Russia, and the United States. Very seldom, Troshko is the forename as well as the last name.