| Image Coa: | DEU Großbarkau COA.svg |
| Coordinates: | 54.2333°N 20°W |
| Image Plan: | Grossbarkau in PLOE.png |
| State: | Schleswig-Holstein |
| District: | Plön |
| Amt: | Preetz-Land |
| Elevation: | 38 |
| Area: | 2.93 |
| Postal Code: | 24245 |
| Area Code: | 04342 |
| Licence: | PLÖ |
| Gemeindeschlüssel: | 01 0 57 023 |
| Website: | www.amtpreetzland.de |
| Mayor: | Daniel Smederevac |
Großbarkau is a municipality in the district of Plön, in Schleswig-Holstein, Germany.