| Coordinates: | 50.9228°N 11.3581°W |
| Image Plan: | Oettern in AP.png |
| State: | Thuringia |
| District: | Weimarer Land |
| Verwaltungsgemeinschaft: | Mellingen |
| Elevation: | 245 |
| Area: | 3.61 |
| Postal Code: | 99438 |
| Area Code: | 036453 |
| Licence: | AP |
| Gemeindeschlüssel: | 16 0 71 071 |
| Mayor: | Gerhard Ulrich[1] |
| Leader Term: | 2022 - 28 |
Oettern is a municipality in the Weimarer Land district of Thuringia, Germany.