| Type: | Stadtteil |
| Town: | Ilmenau |
| Image Coa: | Wappen_Langewiesen.PNG |
| Coordinates: | 50.6717°N 10.9744°W |
| State: | Thüringen |
| District: | Ilm-Kreis |
| Elevation: | 454 |
| Area: | 27.51 |
| Population: | 3544 |
| Stand: | 2016-12-31 |
| Postal Code: | 98704 |
| Area Code: | 03677 |
| Licence: | IK |
| Website: | www.langewiesen.de |
Langewiesen is a town and a former municipality in the Ilm-Kreis district, in Thuringia, Germany. Since July 2018, it is part of the town Ilmenau. It is situated on the river Ilm, 4 km southeast of Ilmenau.