Mussomeli (Mussumeli in Sicilian) is a town in the province of Caltanissetta, Sicily, Italy.The name of the town is derived from Arabic.
The Chiaramonte Castle (Castello Manfredonico), built in 1370 in Norman-Gothic style. It stands on a high crag, elevation 778 metres (2,552 ft), 2 kilometres (1.2 mi) outside the town. It has large halls, dungeons and torture cells, and a chapel with a precious alabaster depicting the Madonna dell Catena (1516). Near the castle are the ruins of a Greek-Italic village.