The Don Cossack Region electoral district (Russian: Избирательный округ области войска Донского) was a constituency created for the 1917 Russian Constituent Assembly election.

[3] Originally assigned 17 seats, by decree of the Provisional Government the number of deputies of the Don Cossack Region district was increased to 19.

[4] The Provisional Government had provided a degree of autonomy to the Don region, recognizing the authority of the Cossacks over the land.

The Kadets had sought to form a joint Kadet-Cossack list in the district, and a number of Kadet national leaders had visited the area ahead of the election.

The effort failed, over differences of opinion on land ownership of non-Cossacks.