Komijan County (Persian: شهرستان کمیجان) is in Markazi province, Iran.

[4] Azerbaijanis, Persians and Tats are the largest ethnic groups in the county.

At the time of the 2006 census, the county's population was 45,296 in 11,539 households.

[2] Komijan County's population history and administrative structure over three consecutive censuses are shown in the following table.

Media related to Komijan County at Wikimedia Commons