Midžor (Serbian Cyrillic: Миџор, pronounced [mîdʒɔr], Bulgarian: Миджур, Midzhur) is a peak in the Balkan Mountains, situated on the border between Bulgaria and Serbia. At 2,169 metres (7,116 ft), it is the highest peak of the Western Balkan Mountains, as well as of Central Serbia. Midžor is the 12th highest peak in the Balkan Mountains.

Since the early 1990s, Midžor has been accessible to tourists from both sides; previously, access was forbidden due to the peak being in the border area. Due to those restrictions, the nature around the peak has been preserved untouched. On the Bulgarian side, the peak is reachable from the villages of Chuprene and Gorni Lom in Vidin Province.

From Chuprene there are two possibilities for climbing. There is a 17 km dirt road following the river Chprenska to the Gorski Ray refuge (1,450 m) or a 9 km foot track following the river Manastirska.

From the refuge there is a marked track which passes through the Chuprene biosphere reserve and leads to the main summit on a saddle between the peaks Replyanska Tsarkva (1,969 m) and Ostra Chuka (1967 m). To the south east through the peaks Ostra Chuka and Oba (2,033 m) the track reaches a saddle from where the Lom River and the Timok flow out at border stone 336. From there Midžor can be climbed from the north-western slope.