| Coordinates: | 51.2167°N 59°W |
| Image Plan: | Hornsömmern in UH.png |
| State: | Thüringen |
| District: | Unstrut-Hainich-Kreis |
| Verwaltungsgemeinschaft: | Bad Tennstedt |
| Elevation: | 282 |
| Area: | 4.28 |
| Postal Code: | 99955 |
| Area Code: | 036041 |
| Licence: | UH |
| Gemeindeschlüssel: | 16 0 64 027 |
| Website: | www.badtennstedt.de |
| Mayor: | Heinz Schröter[1] |
| Leader Term: | 2022 - 28 |
Hornsömmern is a municipality in the Unstrut-Hainich-Kreis district of Thuringia, Germany.