| Allendorf | |
| Type: | Stadt |
| Image Coa: | Wappen Allendorf (Lumda).png |
| Coordinates: | 50.6789°N 8.8244°W |
| Image Plan: | Landkreis Gießen Allendorf.png |
| State: | Hessen |
| Region: | Giessen |
| District: | Giessen |
| Elevation: | 230 |
| Area: | 22.01 |
| Postal Code: | 35469 |
| Area Code: | 06407 |
| Licence: | GI |
| Gemeindeschlüssel: | 06 5 31 001 |
| Website: | www.allendorf-lda.de |
| Mayor: | Sebastian Schwarz[1] |
| Leader Term: | 2023 - 29 |
| Party: | SPD |
Allendorf (pronounced as /de/, official name: Allendorf (Lumda)) is a small town in the district of Giessen, in Hesse, Germany. It is situated on the small river Lumda, 16km (10miles) south of Marburg, and 14km (09miles) northeast of Giessen.