Dewanganj (Bengali: দেওয়ানগঞ্জ) is an Upazila of Jamalpur District, Mymensingh Division, Bangladesh.

Bahadurabad Ghat of this upazila was a very important place in the northern sector due to its strategic location.

[5] In 1971, the Pakistani Army deployed one platoon of soldiers of the 31st Baluch Regiment, one company of para-military Rangers Forces and about 50 Razakars to keep full control over the Bahadurabad Ghat along with the Jamuna River.

On July 3, 1971, a group of 400 Freedom Fighters attacked the Bahadurabad Ghat, under the command of Major Shafayet Jamil.

With this victory, the Freedom Fighters were able to disrupt the railway communication between Jamalpur and Bahadurabaad Ghat.

[7] It is bordered by Kurigram district of Rangpur division to the north, Meghalaya state of India and Bakshiganj upazila to the east, Islampur upazila to the south, and Gaibandha district of Rangpur division to the west.

Dewanganj has a literacy rate (age 7 and over) of 32.5%, compared to the national average of 51.8%, and a sex ratio of 1039 females per 1000 males.

The main crops are paddy, jute, sugarcane, mustard seed, wheat, potato, garlic, cabbage, cauliflower, brinjal, varieties of pulse and vegetables.