The Central District of Khoy County () is in West Azerbaijan province, Iran. Its capital is the city of Khoy.
In 2007, the village of Dizaj Diz was converted to a city.
At the time of the 2006 census, the district's population was 260,854 in 62,805 households. The following census in 2011 counted 288,565 people in 80,605 households. The 2016 census measured the population of the district as 288,269 inhabitants in 85,342 households.