| Official Name: | Porezen |
| 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: | Slovenian Littoral |
| Subdivision Type2: | Statistical region |
| Subdivision Name2: | Gorizia |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Tolmin |
| Area Total Km2: | 7.3 |
| Population As Of: | 2002 |
| Population Total: | 8 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 46.1851°N 13.9428°W |
| Elevation M: | 870.7 |
| Footnotes: | [1] |
Porezen (in Slovenian pronounced as /ˈpoːɾɛzən/; in older sources also Porzen[2]) is a dispersed settlement on the northern slopes of a hill also named Porezen above the Bača Valley in the Municipality of Tolmin in the Littoral region of Slovenia.[3]
Porezen was attested in historical sources as Poworsona in 1523, Possenikh in 1560, Potporsna in 1591, and Podporsnam in 1633. The name is reconstructed with the prefix pod 'below' as *Podvrěsьno, referring to a location below a peak called *Vrěsni vrh or *Vresnik—referring to the treeless peak southeast of the village now also called Porezen (elevation: 1630m (5,350feet)), which was covered in heather (Slovenian: vresje).[4] [5]