| Image Coa: | Wappen Untermassfeld.png |
| Coordinates: | 50.5333°N 35°W |
| Image Plan: | Untermaßfeld in SM.png |
| State: | Thüringen |
| District: | Schmalkalden-Meiningen |
| Elevation: | 295 |
| Area: | 10.79 |
| Postal Code: | 98617 |
| Area Code: | 036949 |
| Licence: | SM |
| Gemeindeschlüssel: | 16 0 66 076 |
| Mayor: | Michael Trampler[1] |
| Leader Term: | 2022 - 28 |
Untermaßfeld is a municipality in the district Schmalkalden-Meiningen, in Thuringia, Germany.