Family name Avach (Avach 
, Аваш 
) , around the world, is a very rare last name. The surname Avach is habitual in Kyrgyzstan, where it is a very rare surname, Ukraine, and Russia. Not in comparison with a country's population, this name is the most popular in India, Russia, and Ukraine. Very seldom, Avach is the forename as well as the last name.