Last name Yanii (Yanii 
, Яний 
) , in the entire world, is a rare surname. The last name Yanii is characteristic of Indonesia, where it is a rare surname, Kazakhstan, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Indonesia, Russia, and India. Likewise, Yanii is the forename as well as the last name.