Borzinsky District (Russian: Борзинский район) is an administrative[1] and municipal[6] district (raion), one of the thirty-one in Zabaykalsky Krai, Russia.

It is located in the south of the krai, and borders with Olovyanninsky District in the north, Aleksandrovo-Zavodsky District in the east, Zabaykalsky District in the south, and with Ononsky District in the west.

The area of the district is 9,000 square kilometers (3,500 sq mi).

[2] Its administrative center is the town of Borzya.

[3] The district was established on January 4, 1926.