Lovćen (Cyrillic: Ловћен, pronounced [lôːʋtɕen]) is a mountain and national park in southwestern Montenegro. It is the inspiration behind the names Montenegro and Crna Gora, both of which mean "Black Mountain" and refer to the appearance of Mount Lovćen when covered in dense forests. The name Crna Gora was first mentioned in a charter issued by Stefan Milutin in 1276 and was used for several regions across medieval Serbian lands, including Skopska Crna Gora and Užička Crna Gora.

Mount Lovćen rises from the borders of the Adriatic basin, closing the long and twisting bays of Boka Kotorska and making the hinterland to the coastal town of Kotor. The mountain has two imposing peaks, Štirovnik; 1,749 m (5,738 ft) and Jezerski vrh; 1,657 m (5,436 ft).

The mountain slopes are rocky, with numerous fissures, pits and deep depressions giving its scenery a specific look. This is a karst landscape carved from limestone and dolomite. Lovćen stands on the border between two completely different natural wholes, the sea and the mainland, and so it is under the influence of both climates. The specific connection of the life conditions has caused the development of the different biological systems. There are 1,158 plant species on Lovćen, four of which are endemic.