Spodnja Šiška is a formerly independent settlement in the northwest part of the capital Ljubljana in central Slovenia. It is part of the traditional region of Upper Carniola and is now included with the rest of the municipality in the Central Slovenia Statistical Region.

Ljubljana is the capital and largest city of Slovenia, located along a trade route between the northern Adriatic Sea and the Danube region, north of the country's largest marsh, inhabited since prehistoric times. It is the country's cultural, educational, economic, political and administrative center.