Cognomen Mishkoi (Мишкой 
, Mishkoi ) , all around the world, is a rare last name. The cognomen Mishkoi is habitual in Moldova, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Eastern Europe, particularly Moldova, Russia, and Ukraine.