Sevnica (Lichtenwald ) is a town on the left bank of the Sava River in central Slovenia. It is the seat of the Municipality of Sevnica. It is one of the three major settlements in the Lower Sava Valley. The old town of Sevnica lies beneath Sevnica Castle, which is perched on top of Castle Hill, while the new part of town stretches along the plain among the hills up the Sava Valley, forming another town core at the confluence of the Sevnična and Sava rivers.
The settlement was first attested in written records in 1275 in German as Liechtenwalde (and as Lihtenwalde in 1309, Lietenueld in 1344, Liechtenwald in 1347, and Sielnizza in 1581). The Slovene name is probably derived from a hydronym referring to Sevnična Creek (first attested in 1488 as Zellnitz). This name is derived from the adjective se(d)lьnъ 'belonging to a settlement, village'. The Slovene name is not connected to the German name, which refers to deciduous woods. In the past the German name of the town was Lichtenwald.
