| Official Name: | Orehek |
| Pushpin Map: | Slovenia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Slovenia |
| Subdivision Type: | Country |
| Subdivision Name: | Slovenia |
| Subdivision Type1: | Traditional region |
| Subdivision Name1: | Inner Carniola |
| Subdivision Type2: | Statistical region |
| Subdivision Name2: | Littoral–Inner Carniola |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Postojna |
| Area Total Km2: | 9.09 |
| Population As Of: | 2002 |
| Population Total: | 189 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 45.7491°N 14.1539°W |
| Elevation M: | 564.1 |
| Footnotes: | [1] |
Orehek (in Slovenian pronounced as /ɔˈɾeːxək/; German: Nußdorf,[2] Italian: Orecca) is a village southwest of Postojna in the Inner Carniola region of Slovenia.[3]
The parish church in the settlement is dedicated to Saint Florian and belongs to the Koper Diocese. A second church is built just outside the settlement next to the cemetery and is dedicated to Saint Lawrence.[4]
Nussdorf Castle (Slovenian: Grad Orehek) is 13th-century castle on a small hill above the village. The collection of buildings showcases architectural styles dating from the 16th to the early 20th century. Still visible are remnants of defensive walls and perimeter towers. The central keep was significantly altered in the 20th century. Among its former owners are a number of prominent Carniolan noble families, including the Counts of Thurn and the princely family Porcia.[5]