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| Location | Wyk auf Föhr, North Frisian islands, Germany |
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| Coordinates | |
| Year first constructed | 1952 |
| Year first lit | 1952 |
| Automated | 1952 |
| Construction | Masonry with brick facade |
| Tower shape | Square tower with round lantern |
| Markings / pattern | Unpainted brick tower, white lantern |
| Height | 8.6 metres (28 ft) |
| Focal height | 10 metres (33 ft) |
| Original lens | Fresnel lens |
| Range | 13 nautical miles (24 km; 15 mi) (white) 10.1 nautical miles (19 km; 12 mi) (red) |
| Characteristic | Gp. Occ. (4) 15 s |
| Admiralty number | B 1704 |
| NGA number | 10644 |
| ARLHS number | FED-175 |
Olhörn lighthouse (German: Leuchtturm Olhörn, also Leuchtfeuer Olhörn and sometimes Leuchtturm Olderhörn) is a small lighthouse on the German North Sea island of Föhr in Schleswig-Holstein.
The lighthouse is located on the southeastern corner of the island of Föhr, inside the town of Wyk auf Föhr in the Nordfriesland district. It is located on a shallow geestland ridge overlooking the southern beach of Wyk.
It was erected in 1952 to replace a light beacon from 1892. The tower is 8.6 m tall with a focal height of 10 m above mean high water. It has a near square shape and was built of massive masonry that was encased by reddish brown bricks. On the gallery there is the lantern room made of metal; it is painted white. The automated lighthouse serves as a cross light for navigation in the Norderaue tidal channel between the mainland port of Dagebüll and the islands of Föhr and Amrum. As such it is a sea mark and also a minor daymark.