| Official Name: | Šmartno v Tuhinju |
| Pushpin Map: | Slovenia |
| Pushpin Label Position: | bottom |
| 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: | Central Slovenia |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Kamnik |
| Area Total Km2: | 1.75 |
| Population As Of: | 2002 |
| Population Total: | 202 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 46.2148°N 14.7308°W |
| Elevation M: | 462.5 |
| Footnotes: | [1] |
Šmartno v Tuhinju (pronounced as /sl/; German: Sankt Martin[2]) is a village in the Tuhinj Valley in the Municipality of Kamnik in the Upper Carniola region of Slovenia.
The parish church in the village is dedicated to Saint Martin.