Zaječar (Serbian Cyrillic: Зајечар, pronounced [zâjɛtʃar]; Romanian: Zaicear or Zăiceari) is a city and the administrative center of the Zaječar District in eastern Serbia. According to the 2022 census, the city administrative area had a population of 48,621 inhabitants.
Zaječar is widely known for its rock music festival Gitarijada and for the ZALET festival dedicated to contemporary art.