Family name Chirna (Chirna 
, Ширна 
) , in the entire world, is a very rare cognomen. The last name Chirna is habitual in Russia, where it is a very rare surname, Ukraine, where it is an extremely rare surname, and Nigeria. Not in comparison with a country's population, it is the most numerous in Russia, India, and Nigeria. More prevalently, Chirna is the forename as well as the last name.