Chechens
Chechens (; '; Old Chechen: Нахчой "Naxçoy") are a Northeast Caucasian ethnic group of the Nakh peoples originating in the North Caucasus region of Eastern Europe. They refer to themselves as Vainakhs (which means "our people" in Chechen) or Nokhchiy (pronounced ; singular Nokhchi, Nakhchuo or Nakhtche). Chechen and Ingush peoples are collectively known as the Vainakh. The majority of Chechens today live in the Chechen Republic, a subdivision of the Russian Federation.
Chernarus
The people of Chernarus are referred to as Chernarussians, which is also the name of the predominant ethnic group of the country. The country is home to a sizable Russian minority, particularly in the South Zagoria region. Ethnic Chernarussians speak Chernarussian, which is essentially Czech written with a Cyrillic alphabet. In the game's 2009, the South Zagoria is home to a Communist insurgency led by the Chernarussian Red Star Movement (ChDKZ, pronounced "Chedaki"), among inter-ethnic tensions between Chernarussians and Russians residing there. Chernarus has its own national anthem, based on the Soviet song "Березы" ().