Mahiari is a census town in Domjur CD Block of Howrah Sadar subdivision in Howrah district in the Indian state of West Bengal. It is a part of Kolkata Urban Agglomeration.

Howrah Sadar subdivision is a subdivision of the Howrah district in the state of West Bengal, India. It consists of Howrah municipal corporation and five community development blocs: Bally Jagacha, Domjur, Panchla, Sankrail and Jagatballavpur. The five blocks contain 67 gram panchayats and 44 census towns. The subdivision has its headquarters at Howrah.