Religion in Bangladesh
Islam is the largest religion of Bangladesh; Muslims constitute 89.5% of the population, followed by Hindus, who constitute 9.6%. The remainder of Bangladeshis practice other religions, such as Buddhism and Christianity, or practice no religion. Religion has always been a strong part of identity, but this has varied at different times. A survey in late 2003 confirmed that religion is the first choice by a citizen for self-identification. According to a government-published article, atheism is extremely rare.
Muslims constitute almost 90 percent of the population. Most Muslims in Bangladesh are Sunnis, but there is a small Shia community and an even smaller Ahmadiyya Muslim Community. Most of those who are Shia reside in urban areas. Although these Shias are few in number, Shia observance commemorating the martyrdom of Ali's sons, Hasan and Husayn, is widely observed by the nation's Sunnis.
The Muslim community in the Bengal region developed independent of the dominant Islamic trends in India. The preservation of pre-Islamic cultural elements from Buddhist and Hindu periods made the commitment to Islam uniquely Bangladeshi. Features of Bangladeshi Hinduism, which differed in some respects from Hinduism in other parts of South Asia, influenced both the practices and the social structure of the Bangladeshi Muslim community. In spite of the general personal commitment to Islam by the Muslims of Bangladesh, observance of Islamic rituals and tenets varies according to social position, locale, and personal considerations. In rural regions, some beliefs and practices tend to incorporate elements that differ from and often conflict with orthodox Islam.
Hinduism is the second largest religious affiliation in Bangladesh, covering approximately 10 percent of the population as of the 2001 census. In terms of population, Bangladesh is the third largest Hindu state of the world, after India and Nepal.
In nature, Bangladeshi Hinduism closely resembles the forms and customs of Hinduism practised in the neighbouring Indian state of West Bengal, with which Bangladesh (at one time known as East Bengal) was united until the partition of India in 1947.
Most of the followers of Buddhism in Bangladesh live in the South-Eastern region, especially in the Chittagong Hill Tracts, Chittagong and Comilla district. Most of the Buddhists of Chittagong Hill Tracts belong to the Chakma, Chak, Marma, Tanchungya and the Khyang, who since time immemorial have practiced Buddhism. Other tribals, notably those who practice animism, have come under some Buddhist influence, and this is true in the case of the Khumi and the Mru, and to a lesser extent in the case of the other tribes. Buddhism is also practiced by the Bengali-speaking Baruas, who are almost exclusively Buddhist and are concentrated heavily in the Chittagong area.
Christians account for approximately 0.3% of the total population. Roman Catholicism is dominant; the remaining Christians are predominantly Protestant.
The Bahá'í Faith in Bangladesh began before its independence, when it was part of India. The roots of the Bahá'í Faith in the region go back to the first days of the Bábí religion in 1844. During Bahá'u'lláh's lifetime, as founder of the religion, he encouraged some of his followers to move to India. And it may have been Jamál Effendi who was first sent and stopped in Dhaka more than once. The first Bahá'ís in the area that would later become Bangladesh were a Bengali group from Chittagong that accepted the religion while in Burma. By 1950 there were enough members of the religion to elect Bahá'í Local Spiritual Assemblies in Chittagong and Dhaka. The community has contributed to the progress of the nation of Bangladesh individually and collectively, and in 2005 the World Christian Encyclopedia estimated the Bahá'í population of Bangladesh at almost 10,000.
Law, religion, and religious freedom
Although initially Bangladesh opted for a secular nationalist ideology as embodied in its Constitution, the principle of secularism was subsequently replaced by a commitment to the Islamic way of life through a series of constitutional amendments and government proclamations between 1977 and 1988. The Constitution establishes Islam as the state religion but provides for the right to practice—subject to law, public order, and morality—the religion of one's choice. The Government generally respects this provision in practice; however, some members of the Hindu, Christian, Buddhist, and Ahmadiyya communities experience discrimination. The Government (2001-2006), led by an alliance of four parties (Bangladesh Nationalist Party, Jamat-e-Islami Bangladesh, Islami Oikya Jote and Bangladesh Jatiyo Party) banned the Ahmadiyya literatures by an executive order.
Family laws concerning marriage, divorce, and adoption differ depending on the religion of the person involved. There are no legal restrictions on marriage between members of different faiths.
-  2001 Bangladesh Census
-  OurBangla.com
- U.S Department of State: Census Bureau of South and Central Asian Affairs
- "The Bahá'í Faith -Brief History". Official Website of the National Spiritual Assembly of India. National Spiritual Assembly of the Bahá'ís of India. 2003. Retrieved 2009-04-04.
- Momen, Moojan; Smith, Peter. "Bahá'í History". Draft A Short Encyclopedia of the Baha'i Faith. Bahá'í Library Online. Retrieved 2009-04-04.
- Momen, Moojan (2000). "Jamál Effendi and the early spread of the Bahá’í Faith in Asia". Baha'i Studies Review (Association for Baha'i Studies (English-Speaking Europe)) 09 (1999/2000). Retrieved 2009-04-04.
- Ali, Meer Mobeshsher. "Bahai". Banglapedia: Entry Title Index. Online. Asiatic Society of Bangladesh. Retrieved 2009-04-04.
- Compiled by Hands of the CauseResiding in the Holy Land. "The Bahá'í Faith: 1844-1963: Information Statistical and Comparative, Including the Achievements of the Ten Year International Bahá'í Teaching & Consolidation Plan 1953-1963". pp. 51, 107.
- "Most Baha'i Nations (2005)". QuickLists > Compare Nations > Religions >. The Association of Religion Data Archives. 2005. Retrieved 2009-07-04.
-  Article 2A