Sylhet is an ancient territory of Bengal. Beanibazar upazila is on the eastern border of Sylhet. on its north, there is Kanairghat, on the south Barlekha, on the west Golapgong and on the east Karimgong of India.The river Surma flows on its north border, on the south the river Sunai has separated the upazila from Moulovibazar. The Kushiara flows though the middle and on the east. The Sunai flows over a large area.This upazila inherited a glorious tradition. Its past history is also very attractive. But due to proper nourishment the glorious tradition of past history is somewhat ambiguous. The scattered facts and incidents that are available in various books are not accepted by all as authentic.

There goes a story behind its name. Present upazila complex was once high land of dense forest. There was abode of many wild animals, with dusk they used to come out for prey. And this is why in the evening people used to come here rarely. So the hut sets in the morning, it was named “Beanibazar” (Morning market). But now these days are gone. There can be no trace of any wild animal even a fox at dead of night. Its name and area are changing day by day. Its ancient name is “Tenguri”.

Name of its greatest “pargana” is Panchakhanda. In remote past Panchakhanda and Beanibazar were of synonomical. Many romantic stories of bravery and chivalry of the people are still in vague as legend. On the contrary it is learnt from the copper plate of Nidonpur that Mohabhuti Barma the great grand father of Bhaskar Barma king of Kamrupa (the lord of Pragjyotish pur) executed a copper plate donating some land included within the territory of “Mayur Shallam” in Chandrapuri or Chandrapur ( District ) of his kingdom after the name of a deity for his daily worship and maintenance and rest some portion to some Brahmin as permanent Khas land ( revenue free ). In the copper plate it is only mentioned as included within the Chandrapuri Bisay ( District ) of Vast landscape of Kamrup Kingdom. As there was no mention of Bhukti ( Province ) and Mandal ( District ). Some archeologist opined that it was situated in north Bengal. But according to Dr. Nalinikanta Bhattacharjee and some after the component area of copper plate was Panchakhanda and its near by place.

The Nidanpur copper plate was discovered within 1912 – 25 A.D. Among the seven pieces of the copper plates containing the inscribed Proclamation of Bhaskar Barma, the king of Kamrup, 6 (six) pieces were discovered with copper royal seal marked with elephant.

Another account reveals that some times in seventh century certain adventurous person, named Kalidas Pal of Pal dynasty came to Panchakhanda from Rar province by a daring boat journey and started ruling as a king. At the period of his 5th succeeding generation, the Pal dynasty lost Panchakhanda. Panchakhanda then came under the rule of Muslim. At the time of King Ramjiban Pal.

In 1303 A.D, Sylhet came under the Muslim rule. At that time preaching of islam started. In no time it became a popular religion. Before the arrival of Hazrat Shahjalal there were three kingdoms as Laur, Gour and Jainta and Beanibazar was under gour. According to Dewan Ajraf Khan pargana Isakal of Sunamgong sadar to Panchakhanda, on the north Khasia hill and south the river Kushiara was under gour. After Shahjalal’s conquering Sylhet and before coming under Mughal rule, Sylhet was ruled by different rulers. Among them the Pathan ruled for remarkable period. Sometimes Sylhet went under Tipra, Coch, Kachar ruler. As Beanibazar was a part and parcel of Sylhet, it is said that, as ruled from Sylhet the contemporary event had far-reaching effect on Beanibazar.

Before Panchakhanda was declared as pargana as per the then custom it was called as “Chaturak”. Chaturak under “Bishaya” (District) was equivalent to present upazila , a landscape of 60/70 squares miles area. Even after formation of pargana the name of “Panchakhanda Chaturak” was mentioned in a Persian document of 25th Ashar, 1092 B.S (1685 A.D) during the reign of Emperor Aurangazeb. Later on “Panchakhanda Chaturak” was turned into “Panchakhanda” pargana. There after Phanchakhanda pargana was divided into “Panchakhanda Khala” “Bahadurpur”, “Shahbajpur”, “Aurangabad Matikata”. But the main landscape was known as Phanchakanda Kala.

In 1st August 1989 Beanibazar thana was upgraded to upazila. It was inaugurated by the then Health and Population Minister General Shamsul Haq.

Beanibazar Market was established by Krishna Kishore Pal Chowdhury, son of Ray Bahadur Hare Krishna Roy Chowdhury, the 1st Dewan of Sylhet