Surname Kolosh (Kolosh 
, Колош 
) , all over the world, is a rare cognomen. The last name Kolosh is habitual in Eastern Europe, particularly Slovakia, where it is a rare surname, Belarus, where it is a very rare surname, and Ukraine. Measured by absolute frequency, this name is the most popular in Russia, the United States, and Ukraine. Much less frequently, Kolosh is the forename as well as the last name.