阿亚古兹是哈萨克斯坦的城镇，由东哈萨克斯坦斯坦州负责管辖，位于该国东部，始建于1831年，面积161平方公里，海拔高度654米，每年平均降雨量328毫米，2012年人口37,316。

Ayagoz or Ayakoz (Kazakh:Аягөз, formerly Russian:Сергиополь, Sergiopol) is a city of regional significance in Kazakhstan, the administrative centre of Ayagoz district of East Kazakhstan Region. It is located in eastern Kazakhstan, on the banks of the Ayagoz River. Population: 37,537 (2009 Census results);38,470 (1999 Census results).