Chittagong Division is geographically the largest of the eight administrative divisions of Bangladesh. It covers the south-easternmost areas of the country, with a total area of 33,771.18 km² (13,039.13 sq mi)^[2] and a population at the 2011 census of 28,423,019. The administrative division includes mainland Chittagong District, neighbouring districts and the Chittagong Hill Tracts.

Chittagong Division is home to Cox’s Bazar, the longest natural sea beach in the world.;^[3][4][5] as well as St. Martin’s Island, Bangladesh’s sole coral reef.

Dhaka Division (Bengali: ঢাকা বিভাগ, Ḑhaka Bibhag) is an administrative division within Bangladesh.^[2] The capital and largest city is Dhaka. The Division as constituted prior to 2015 covered an area of 31,051 km²,^[2] and had a population of 47,424,418 at the 2011 Census. However, following the separation of the new Mymensingh Division in 2015, the area has been reduced to 20,508.8 km² with a population at the 2011 Census of 36,433,505.

Dhaka Division is bounded by Mymensingh Division to the north, Barisal Division to the south, Chittagong Division to the east and south-east, Sylhet Division to the north-east, Rangpur Division to the north-west, and Rajshahi Division to the west and Khulna Divisions to the south-west.

Khulna Division (Bengali: খুলনা বিভাগ) is one of the eight divisions of Bangladesh. It has an area of 22,285 km² and a population of 15,563,000 at the 2011 Census (preliminary returns). Its headquarters is Khulna city in Khulna District.

Mymensingh Division (Bengali: ময়মনসিংহ বিভাগ) is one of the eight administrative divisions of Bangladesh. It has an area of 10,485 square kilometres (4,048 sq mi) and a population of 11,370,000 as of the 2011 census. It was created in 2015 from districts previously comprising the northern part of Dhaka Division. Its headquarters are in Mymensingh city in Mymensingh District.

Rajshahi Division (Bengali: রাজশাহী বিভাগ) is one of the eight first-level administrative divisions of Bangladesh. It has an area of 18,174.4 square kilometres (7,017.2 sq mi)^[2] and a population at the 2011 Census of 18,484,858.^[3] Rajshahi Division consists of 8 districts, 70 Upazilas (the next lower administrative tier) and 1,092 Unions (the lowest administrative tier). This division is most valuable division of Bangladesh . It has an excellent rail and road communication infrastructure. The divisional capital of Rajshahi is only six-seven hours road journey away from Dhaka, the capital city.

Until 2010 this Division comprised 16 districts,^[2] but early in that year it was divided into two, when a new Division (Rangpur Division) was formed out of the 8 northerly districts that until then had been part of Rajshahi Division. Rajshahi was dominated by various Rajas, Maharajas and Zamindars.^[4]

Rangpur Division (Bengali: রংপুর বিভাগ) is one the Divisions in Bangladesh. It was formed on 25 January 2010,^[1] as Bangladesh‘s 7th division. Before that, it had been the northern eight districts of the Rajshahi Division. The Rangpur division consists of eight districts. There are 58 Upazilas or subdistricts under these eight districts. Rangpur is the northernmost division of Bangladesh and has a population of 15,665,000 at the 2011 Census.

The major cities of this new division are Rangpur, Saidpur and Dinajpur. Rangpur has well-known educational institutions, such as Carmichael College, Hajee Mohammad Danesh Science and Technology University, Rangpur Medical College, Rangpur Cadet College, Begum Rokeya University and Bangladesh Army University of Science & Technology, Saidpur.

Mansingh, commander of Emperor Akbar, conquered part of Rangpur in 1575. Rangpur came completely under the Mughal empire in 1686. Mughalbasa and Mughalhat of Kurigram district still bear marks of the Mughal rule in the region. During the Mughal rule part of Rangpur was under the sarkar of Ghoraghat, and part under the sarkar of Pinjarah.^[2] Rangapur Ghoraghat has been mentioned in the Riyaz-us-Salatin. During the early period of the company rule Fakir-Sannyasi Rebellion and peasant rebellion were held in Rangpur.

Rangpur division has road, rail, and air connections to other divisions as well as the capital. There are 21 express trains from this division to communicate with the other part of the country. There are three airports in this division among them major airport is in Saidpur Airport Saidpur.

Sylhet Division (Bengali: সিলেট বিভাগ, Sylheti), is the northeastern division of Bangladesh, named after its main city, Sylhet. The colloquial name Sylhet is derived from its original correct form Srihatta but now the term Sylhet is officially recognized name of this division. There are difference of opinions among the scholars regarding the name Srihatta. It is bordered by the Indian states of Meghalaya, Assam and Tripura to the north, east and south, respectively; and by the Bangladeshi divisions of Chittagong to the southwest and Dhaka and Mymensingh to the west. Along with the Indian districts of the Barak Valley, it forms the Greater Sylhet region.

Sylhet is an archaeologically ancient region of South Asia, and has a rich history of Hindu, Buddhist and Islamic culture. There are number of Hindu, Sufi and Muslim shrines found in this division.