| Official Name: | Tirna |
| 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 Sava |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Zagorje ob Savi |
| Area Total Km2: | 4.97 |
| Population As Of: | 2002 |
| Population Total: | 155 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 46.1044°N 14.9071°W |
| Elevation M: | 599.6 |
| Postal Code: | 1282 |
| Footnotes: | [1] |
Tirna (pronounced as /sl/) is a settlement west of Šentlambert in the Municipality of Zagorje ob Savi in central Slovenia. Its territory extends southwards right to the left bank of the Sava River. The area is part of the traditional region of Upper Carniola. It is now included with the rest of the municipality in the Central Sava Statistical Region.[2]
The local church is dedicated to Saints Primus and Felician and belongs to the Parish of Sveta Gora. It is a 16th-century building that was expanded in the 19th century.[3]
Tirna is the site of a mass grave from the period immediately after the Second World War. The Blaž Cave Mass Grave (sl|Grobišče Blažetova jama) is located about 1km (01miles) west of the settlement, along a forest road. It contains the remains of about 150 Slovene civilians from the prison in Litija that were murdered here in May, June, and July 1945.[4] The cave is deep.[5]