Cognomen Яцука (Yatsuka 
, Яцука 
) , throughout the world, is a very rare family name. The cognomen Яцука is characteristic of Canada, where it is an extremely rare surname, Ukraine, and China. Not in comparison with a country's population, it is the most numerous in China, the United States, and Canada. Predominantly, Яцука is the forename as well as the last name.