Coll de Nargó is a municipality in the comarca of Alt Urgell, in the Catalonia region of Spain. It lies in the Segre valley beside the Oliana reservoir.
The municipality is served by several roads: the C-14 between Ponts and La Seu d'Urgell, the L-511 to Isona, and the L-401 to Sant Llorenç de Morunys. Its population is 585.
Among its notable features is the Romanesque church of Sant Climent, which dates from the eleventh century and has a rectangular pre-Romanesque bell-tower.