Last name Chirok (Chirok 
, Чирок 
) , across the world, is a rare surname. The surname Chirok is habitual in Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Belarus, Ukraine, and Russia. Very seldom, Chirok is the forename as well as the last name.