| Official Name: | Vetrnik |
| Pushpin Map: | Slovenia |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Slovenia |
| Subdivision Type: | Country |
| Subdivision Name: | Slovenia |
| Subdivision Type1: | Traditional region |
| Subdivision Name1: | Styria |
| Subdivision Type2: | Statistical region |
| Subdivision Name2: | Savinja |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Kozje |
| Area Total Km2: | 12.06 |
| Population As Of: | 2002 |
| Population Total: | 153 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 46.0692°N 15.5182°W |
| Elevation M: | 652.2 |
| Footnotes: | [1] |
Vetrnik (in Slovenian pronounced as /ˈʋeːtəɾnik/) is a dispersed settlement in the Municipality of Kozje in eastern Slovenia. It lies in the southern part of the Sava Hills (Slovenian: Posavsko hribovje) west and south of Kozje. The area is part of the historical Styria region. The municipality is now included in the Savinja Statistical Region.[2]