Delijan, also Romanized as Delījān, Dalijān, and Dilījān, is a city in the Central District of Delijan County, Markazi province, Iran, serving as capital of both the county and the district. Delijan is 80 km from Qom and 160 km from Isfahan. The city is twinned with Dilijan, Armenia.

Delijan County is in Markazi province, Iran. Its capital is the city of Delijan.