Kyrinsky District () is an administrative and municipal district (raion), one of the thirty-one in Zabaykalsky Krai, Russia. It is located in the southwest of the krai, and borders with Ulyotovsky District in the north. The area of the district is . Its administrative center is the rural locality (a selo) of Kyra. Population: 16,016 (2002 Census); The population of Kyra accounts for 33.4% of the district's total population.
The Khentei-Daur Highlands are located in the eastern part of the district.
The district was established on January 4, 1926.