Qaisar (Qaysar or Qeysar) (Persian: قیصار) is a district situated in the southwestern part of the Faryab province of Afghanistan.

In 2021, the population was 400,000[2] with an ethnic composition of 70% Uzbek (Turkic origin), 16% Tajik, 10% Pashtun and 4% Turkman.

The gardeners export tons of raisins to surrounding provinces in the north of the country and abroad to Russia and India, as fresh grapes can not be exported due to transportation problems and bad road conditions.

The district is watered by the river, which starts in the Terband-I-Turkistan Mountains and flows into Qaisar.

From 24 April to 7 May 2014, flash flooding from heavy rainfall destroyed public facilities, roads and agricultural land.