Reang, also known as Bru, is one of the Tripuri clan of the Northeast Indian state. The Reangs can be found all over the Tripura state in India. However, they may also be found in Assam and Mizoram. Their language is similar to Kokborok and the language itself is the branch of Tibeto Burman, locally known as 'Kaubru'. They are known as "Riang" in the Indian Constitution. The Reang, on the other hand, identify as "Reang" rather than "Riang," and are often referred to as Bru. In the North East of India, the Brus call themselves as the Reangs, a semi-nomadic people who farm hillsides by the jhum or shifting method. This forces them to relocate after a few years.

Ethnically, the Bru are divided into three major clans: Meska and Molsoi and Uchoi/Ushoy. The Bru Community is made up of 14 clans or panjis: Molsoi, Tuimui, Msha, Taumayakcho, Apeto, Wairem, Meska, Raikchak, Chorkhi, Chongpreng, Nouhkham, Yakstam, Jolai and Waring.

According to Part XVII of the Constitution (Scheduled Tribes) Order, 1950, the Riang (Bru) tribe is a sub-tribe of the Kuki tribe and one of Mizoram's Scheduled Tribes. The Kukis and Mizos are members of the Kuki-Chin Linguistic Group, while the Brus belong to the Austroasiatic/ Mon–Khmer Linguistic Group. As a result, the Tripura Bru/Reang are designated as a distinct tribe under Section 16 of Part XV - Tripura of the Constitution (Scheduled Tribes) Order 1950.

In 2018, following the Union Home Ministry's decision to give voting rights to around 30,000 people who had fled from Mizoram to Tripura in 1997 in the wake of inter-community violence, The Election Commission asked the State of Mizoram to revise its rolls for the 2018 polls and include the members of the internally-displaced community. As many as 32,876 people of the Bru tribe were set to be repatriated to Mizoram after a tripartite agreement was signed between the centre, Tripura and Mizoram government. On 16 January 2020, a quadripartite agreement was signed among the centre, state governments of Tripura and Mizoram and Bru representatives to facilitate permanent settlement of Bru IDPs( Internally displaced people's) from Mizoram in Tripura, benefitting around 34,000 IDPs.

The Bru are the second most populous tribe in Tripura after Tripuri people. According to the legend, a Tripuri prince who was once exiled by the King made his way, along with his followers, to the Mayani Thalang area of Lushai hills and founded a state over there. He proclaimed himself King and his descendants too ruled over the break-away state for generations. As it sometimes happens, there came a time when there was no heir to succeed to the throne, leading to anarchy in the kingdom. At around the same time, bitter feud and internal vendetta saw four chiefs of the following sub tribes Twikluha, Yongsika, Paisika, Tuibruha leave their hearth and home along with their entourages to migrate back to the state of Tripura. It was a long and arduous journey, fraught with danger and the travellers had to make more than a couple of attempts before they successfully made their way up the Dombur hill.

At the time, Mahendra Manikya ruled the kingdom of Tripura. The chiefs made many attempts to reach the King to request asylum. They approached ministers, bureaucrats, and courtiers for help in arranging a meeting with the King but with no success. By this time, they had exhausted their supplies and were rather anxious to catch the attention of the King. Finally in desperation, they breached the dam on the Gumti river where worshippers had gathered for prayers. This was a serious crime and all of them were immediately apprehended and brought before the king. The crime was a serious one and merited capital punishment. But before the King could pass his judgement, the chiefs managed to send word to the Queen Gunoboti. They begged her for help and she persuaded the King to forgive them. The chiefs swore fealty to the Queen and to the throne of Tripura and settled down in the Kingdom. Popular legend has it that the Queen even offered the chiefs breast milk, to symbolise their new parent-child relationship, in a large brass pan which was given to the chiefs along with other valuable things, carefully preserved by Reangs to date.

In 1971 the Reang were the second largest of the scheduled tribes in Tripura. There were 64,722 people accounted for in the Reang tribe in Tripura that year. In 1961 the Reang had numbered 56,597 and in 1951 they had numbered 8,471. According to the 2001 census, there were 165,103 Reang in Tripura and 1,88,220 in 2011. In Mizoram the population of Bru is unknown but as per the research topic Insurgency in Mizoram: A study of its Origin, Growth and Dimensions (2008) in the year 1997 around 41000 Reang/Bru were forced to flee Mizoram but as of 2008 as per ‘Baptist Today’ there are 58269 populations of Bru in 80 villages of Mizoram. This population consists of 11350 families of Bru.

The Reangs are primarily an agrarian tribe. In the past, they mostly practised the Huk or Jhum cultivation like most other Tripuri tribes. However today, most of them have adopted modern agricultural practices. Many occupy high posts in the bureaucracy and a few have even started their own businesses.^{[citation needed]}