| Type: | Ortsgemeinde |
| Image Coa: | DEU Longen COA.svg |
| Coordinates: | 49.8042°N 6.7894°W |
| Image Plan: | Longen in TR.svg |
| State: | Rheinland-Pfalz |
| District: | Trier-Saarburg |
| Verbandsgemeinde: | Schweich an der Römischen Weinstraße |
| Elevation: | 129 |
| Area: | 0.97 |
| Postal Code: | 54338 |
| Area Code: | 06502 |
| Licence: | TR |
| Gemeindeschlüssel: | 07 2 35 077 |
| Website: | Longen auf der Website der VG Schweich |
Longen is a municipality in the Trier-Saarburg district, in Rhineland-Palatinate, Germany.