Knjaževac (Serbian Cyrillic: Књажевац, pronounced [kɲǎːʒɛʋat͡s]) is a town and municipality located in the Zaječar District of the eastern Serbia.

Based on the type of dagger that is represented above the horse's neck, it is concluded that the drawing is from the Bronze Age period.

In the Roman period, Timacum Minus fort existed near the village of Ravna, within the present municipality.

[4] Medieval monuments in the area include the 14th century Church of the Holy Mother of God in Donja Kamenica, notable for its unusual architectural style and fresco paintings.

[7] In 1833, the town, formerly known as Gurgusovac, was liberated from the Ottoman Empire and was administrated into the Krajina nahija of the Principality of Serbia in 1834.

During the Ottoman period, the fortress, known as the Gurgusovac Tower, after the then name of the town, was built with a purpose to control the Niš-Vidin road.

Strategically located, encompassed by the rampart and a deep trench, the fort hosted the company of 100 soldiers.

After Prince Miloš Obrenović returned to Serbia in 1858 and replaced Alexander Karađorđević, he visited Gurgusovac and ordered for the tower to be burned to the ground.

The ethnic composition of the municipality:[12] The following table gives a preview of total number of registered people employed in legal entities per their core activity (as of 2018):[13] Knjaževac, with its Babin Zub ski center at an elevation of 1,758m offers opportunities for tourism and sports events.