| Image Coa: | DEU Breitenburg COA.svg |
| Coordinates: | 53.8833°N 43°W |
| Image Plan: | Breitenburg in IZ.png |
| State: | Schleswig-Holstein |
| District: | Steinburg |
| Amt: | Breitenburg |
| Elevation: | 6 |
| Area: | 10.49 |
| Postal Code: | 25524 |
| Area Code: | 04821, 04828 |
| Licence: | IZ |
| Gemeindeschlüssel: | 01 0 61 017 |
| Website: | www.amt- breitenburg.de |
| Mayor: | Ingo Köhne |
Breitenburg is a municipality in the district of Steinburg, in Schleswig-Holstein, Germany. It is situated on the river Stör, approx. 4 km southeast of Itzehoe.
Breitenburg is the seat of the Amt ("collective municipality") Breitenburg.