| Official Name: | Osojnica |
| 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: | Upper Carniola |
| Subdivision Type2: | Statistical region |
| Subdivision Name2: | Upper Carniola |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Žiri |
| Area Total Km2: | 0.91 |
| Population As Of: | 2002 |
| Population Total: | 26 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 46.0363°N 14.0889°W |
| Elevation M: | 512.6 |
| Footnotes: | [1] |
Osojnica (in Slovenian pronounced as /ɔˈsoːi̯nitsa/, German: Ossoinitz[2]) is a small settlement on a stream with the same name, a tributary of the Poljane Sora (Slovenian: Poljanska Sora), in the hills southwest of Žiri in the Upper Carniola region of Slovenia.[3]
The name Osojnica is derived from the Slovene common noun osoje 'shady side (of a slope)'. Related names in Slovene ethnic territory include Osojnik, Ossiach (in Austria), and Oseacco (in the Resia Valley in Italy).[4]
Before the Second World War, Osojnica and the surrounding area were part of the Kingdom of Italy. The Italians built a small barracks in the settlement. After the war, the building was converted for residential use.[5]