Šmartno pri Litiji is a town located in the Litija Basin in central Slovenia. It is situated within the traditional region of Lower Carniola and currently falls under the Central Slovenia Statistical Region. The town serves as the seat of the Municipality of Šmartno pri Litiji and includes the hamlet of Slatina.
Geographically, the settlement is positioned 3 km southeast of Litija at the confluence of three creeks: Reka Creek, Black Creek, and Kostrevnica Creek. While it was historically more prominent than its neighbor, it lost this status when the Austrian Southern Railway was routed through Litija.
The area has been inhabited since prehistoric times, with first official records of the settlement appearing in ecclesiastical documents from 1135. Notable historical features include a house dating back to 1580, which housed the Mollerey painting and graphic arts workshop during the 17th century.