Nidže (Macedonian: ) is a mountain in the southwest of the Republic of Macedonia. The mountain is characterised by almost untouched nature: rich pine forests, lomi, rivers and pastures over 2000 meters. The highest peak is Kajmakčalan at 2521 meters above sea level. Adjacent peaks are Starkov grob (1,876 m) and Dobro pole (1,700 m).
The mountain can be reached from the town of Bitola and nearby villages.