| Barnstorf | |
| Type: | Samtgemeinde |
| Image Coa: | Wappen Barnstorf.svg |
| Coordinates: | 52.71°N 8.5064°W |
| State: | Lower Saxony |
| District: | Diepholz |
| Elevation: | 31 |
| Area: | 205.76 |
| Postal Code: | 49406 |
| Area Code: | 05442 |
| Licence: | DH |
| Gemeindeschlüssel: | 032515402 |
| Divisions: | 4 municipalities |
| Website: | www.barnstorf.de |
| Mayor: | Alexander Grimm[1] |
| Leader Term: | 2021 - 26 |
| Bürgermeistertitel: | Samtgemeindebürgermeister |
| Party: | SPD |
Barnstorf is a Samtgemeinde ("collective municipality") in the district of Diepholz, in Lower Saxony, Germany.Its seat is in the village Barnstorf.
The Samtgemeinde Barnstorf consists of the following municipalities: