Aizawl district is one of the eight districts of Mizoram state in India. The district is bounded on the north by Kolasib district, on the west by Mamit district, on the south by Serchhip districts and on the east by Champhai district. The district occupies an area of 3,576.31 square kilometres (1,380.82 sq mi). The headquarters of the district is Aizawl city, the capital of Mizoram. As of 2011 it is the most populous district of Mizoram (out of 8).

The district is named after its headquarters, Aizawl city. In the Mizo language, ai, also known as aidu, refers to a species of turmeric while zawl means plain or field. The name of the city was probably derived from the abundance of the aidu in the area during previous years.

Lengpui Airport, located at a distance of 32 km from Aizawl city provides connection with Kolkata and Guwahati by daily flights and with Imphal by three flights a week.

According to the 2011 census Aizawl district has a population of 404,054, roughly equal to the nation of Brunei.This gives it a ranking of 557th in India (out of a total of 640).The district has a population density of 113 inhabitants per square kilometre (290/sq mi).Its population growth rate over the decade 2001-2011 was 24.07%.Aizawl has a sex ratio of 1009 females for every 1000 males, and a literacy rate of 98.5%.