| Image Coa: | DEU Ausacker COA.svg |
| Coordinates: | 54.7167°N 43°W |
| Image Plan: | Ausacker in SL.PNG |
| State: | Schleswig-Holstein |
| District: | Schleswig-Flensburg |
| Amt: | Hürup |
| Elevation: | 41 |
| Area: | 9.13 |
| Postal Code: | 24975 |
| Area Code: | 04633 u. 04634 |
| Licence: | SL |
| Gemeindeschlüssel: | 01 0 59 103 |
| Website: | www.amthuerup.de |
| Mayor: | Anke Dogs |
Ausacker (Danish: Oksager) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.