| Barnitz | |
| Image Coa: | DEU Barnitz COA.svg |
| Coordinates: | 53.8119°N 10.4825°W |
| Image Plan: | Barnitz in OD.svg |
| State: | Schleswig-Holstein |
| District: | Stormarn |
| Amt: | Nordstormarn |
| Elevation: | 29 |
| Area: | 11.80 |
| Postal Code: | 23858 |
| Area Code: | 04533 |
| Licence: | OD |
| Gemeindeschlüssel: | 01 0 62 008 |
| Divisions: | 4 |
| Website: | www.amt-nordstormarn.de |
| Mayor: | Hans-Joachim Schütt |
Barnitz is a municipality in the district of Stormarn, in Schleswig-Holstein, Germany.