The Voras Mountains (; also Boras), also known as Nidže (, ) are a mountain range situated on the border between Greece and the Republic of Macedonia. It separates the Pella regional unit on the Greek side in the south from the Mariovo region on the Macedonian side in the north. The tallest peak in the range is Kaimakchalan at . Adjacent peaks are Starkov grob (1,876 m) and Dobro Pole (1,700 m).