The former name of Daganbhuiyan Upazila was Gopiganj, which was ruled under the
Bhulua Kingdom. A review of history shows that the wife of the
Zamindar Arun Singh Bahadur was named Gopi Devi who took over the responsibility of her husband's zamindari. From then on, the zamindari became known as Straight Gopiganj after her name. During the
Baro-Bhuiyan period, some Bhuiyans settled in this area around a reservoir and from their descendants were the two brothers Dagan Bhuiyan and Matu Bhuiyan. According to the sources of Zamir Ahmed, during the reign of Mughal prince
Shah Shuja, many officers and military leaders are known from historical sources to have settled in the
Comilla-Noakhali regions. They were granted '
jagirs' (land grants) here in lieu of salaries or pensions. The area from then on came to be known as Daganbhuiyan. Daganbhuiyan, which was part of the greater Noakhali district formed in 1876 for the administrative needs of the
British Raj, was established as Daganbhuiyan Thana in 1979. Feni subdivision was converted into a district in March 1984, and later in 1983, Daganbhuiyan Thana was elevated to Daganbhuiyan Upazila. It was named after the town of
Daganbhuiyan located on the Feni River. ==Geography==