Gaysin uezd
The Gaysin uezd was a county of the Podolian Governorate of the Russian Empire, with its administrative centre in Gaysin. The area of the Gaysin uezd covered the area of modern-day Haisyn Raion.
Administrative divisions
The subcounties of the Bratslav uezd in 1912 were as follows:| Name | Name in Russian | Capital |
| Granov volost | Грановская волость | Granov |
| Kiblich volost | Кибличская волость | Kiblich |
| Kislyak volost | Кислякская волость | Kislyak |
| Krasnaya-Polka volost | Красно-Полкская волость | Krasnaya-Polka |
| Krasnoselka volost | Красноселкская волость | Krasnoselka |
| Kuna volost | Кунянская волость | Kuna |
| Ladyzhino volost | Ладыжинская волость | Ladyzhino |
| Nizhekrapivna volost | Ниже-Крапивнянская волость | Krapivna |
| Sobolevka volost | Соболевская волость | Sobolevka |
| Teplik volost | Тепликская волость | Teplik |
| Ternov volost | Терновская волость | Ternov |
| Khashchevata volost | Хащеватская волость | Khashchevata |
Demographics
At the time of the Russian Empire Census on, the Gaysin uezd had a population of 248,142, including 123,305 men and 124,837 women. The majority of the population indicated Little Russian to be their mother tongue, with a significant Jewish speaking minority.| Language | Native speakers | Percentage |
| Little Russian | 214,218 | 86.33 |
| Jewish | 25,733 | 10.37 |
| Great Russian | 4,662 | 1.88 |
| Polish | 3,043 | 1.23 |
| German | 184 | 0.07 |
| Tatar | 121 | 0.05 |
| Votyak | 36 | 0.01 |
| White Russian | 24 | 0.01 |
| Gipsy | 23 | 0.01 |
| Czech | 19 | 0.01 |
| Romanian | 11 | 0.00 |
| French | 10 | 0.00 |
| Cheremis | 6 | 0.00 |
| Latvian | 6 | 0.00 |
| Bashkir | 2 | 0.00 |
| Chuvash | 1 | 0.00 |
| Other | 43 | 0.02 |
| Total | 248,142 | 100.00 |