Islam in Bangladesh

Islam is the largest and the state religion of the People's Republic of Bangladesh. According to the 2022 census, Bangladesh had a population of about 150 million Muslims, or 91.04% of its total population of 165 million. The majority of Bangladeshis are Sunni, and follow the Hanafi school of fiqh. Despite being a secular state, Bangladesh is a de facto Islamic country.

In the late 7th century, Arab Muslims established commercial as well as religious connection within the region before the conquest, mainly through the coastal regions as traders and primarily via the ports of Chittagong. In the early 13th century, Muhammad bin Bakhtiyar Khalji conquered Western and part of Northern Bengal, and established the first Muslim kingdom in Bengal. Islamic missionaries in India achieved their greatest success, in terms of number of converts, in Bengal. Sufi's like Shah Jalal are thought to have spread Islam in the north-eastern Bengal and Assam during the beginning of the 12th century. The Islamic Bengal Sultanate, was founded by Shamsuddin Ilyas Shah after its independence from the Tughlaq dynasty. Bengal reached in her golden age during Bengal Sultanate's ruling period. Subsequently, Bengal was conquered by Babur, the founder of one of the gunpowder empires, but was also briefly occupied by the Suri Empire.

In the 17th century, under Mughal Emperor Aurangzeb, concepts of Islamic economics found in the Fatawa-e-Alamgiri delivered a significant direct contribution to the economy of Bengal, and the proto-industrialization was signaled.