Chitinskaya region is situated in Zabaikalie. The region borders on Mongolia in the south, on the republic of Buryatia in the south-west and the west, on Irkutskaya region in the north-west and the north, on the republic of Sakha and Amurskaya region in the north-east, on China in the south-east and the south. Chitinskaya region has boundaries with Aginsky Buryatsky okrug.
In the region there are a lot of lakes and mineral springs.
The climate is sharp continental.