Chita Oblast
Agin-Buryat Okrug (; , "Agyn Buryaaday Toyrog"), or Aga Buryatia, is an administrative division of Zabaykalsky Krai, Russia. It was a federal subject of Russia (an autonomous okrug of Chita Oblast) until it merged with Chita Oblast to form Zabaykalsky Krai on March 1, 2008. Prior to the merger, it was called Agin-Buryat Autonomous Okrug (). Its administrative center is the urban-type settlement of Aginskoye.