Chandanaish Upazila: History
Chandanaish is one of the first inhabitant of the early settlers of Chittagong. Muslim traders and preachers from the then Islamic worlds had been settling in Chandanaish due to the close proximity of Chandanaish from the river Karnaphuli. However, the Muslim settlement was permanently established when the medieval Islamic invasion occurred in Chittagong.
Chandanaish was previously part of Patiya upazila. In 1976, Chandanaish was separated from Patiya and established as Chandanaish thana and in 1983 it became an upazila.