Tillo | |
|---|---|
Map showing Tillo District in Siirt Province | |
| Country | Turkey |
| Province | Siirt |
| Seat | Tillo |
Area | 138 km2 (53 sq mi) |
| Population (2022) | 4,048 |
| • Density | 29.3/km2 (76.0/sq mi) |
| Time zone | UTC+3 (TRT) |


Tillo District is a district of Siirt Province in Turkey which has the town of Tillo as its seat. The district had a population of 4,048 in 2022. Its area is 138 km2.
The district was established in 1990.
The district encompasses the municipality of Tillo, six villages and five hamlets.
Historic population figures of the district:
| Year | Pop. | ±% |
|---|---|---|
| 1970 | 5,140 | — |
| 1980 | 4,662 | −9.3% |
| 1990 | 5,203 | +11.6% |
| 2000 | 5,054 | −2.9% |
| 2010 | 3,930 | −22.2% |
| 2020 | 4,239 | +7.9% |
| 2022 | 4,048 | −4.5% |