| Langenhorn Langhorn | |
| Image Coa: | DEU Langenhorn (Nordfriesland) COA.svg |
| Coordinates: | 54.6667°N 63°W |
| Image Plan: | Langenhorn in NF.PNG |
| State: | Schleswig-Holstein |
| District: | Nordfriesland |
| Amt: | Mittleres Nordfriesland |
| Elevation: | 12 |
| Area: | 47.4 |
| Postal Code: | 25842 |
| Area Code: | 04672 |
| Licence: | NF |
| Gemeindeschlüssel: | 01 0 54 075 |
| Website: | langenhorn.de |
| Mayor: | Olde Oldsen |
| Party: | SPD |
Langenhorn (Danish: Langhorn) is a municipality in the district of Nordfriesland in Schleswig-Holstein, Germany.