| Ostenfeld Østerfjolde | |
| Image Coa: | Ostenfeld (Husum) Wappen.png |
| Coordinates: | 54.4667°N 22°W |
| Image Plan: | Ostenfeld in NF.PNG |
| State: | Schleswig-Holstein |
| District: | Nordfriesland |
| Amt: | Nordsee-Treene |
| Elevation: | 46 |
| Area: | 27.67 |
| Postal Code: | 25872 |
| Area Code: | 04845 |
| Licence: | NF |
| Gemeindeschlüssel: | 01 0 54 099 |
| Mayor: | Eva-Maria Kühl |
Ostenfeld (Danish: Østerfjolde) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.