The Transport Board of Burundi (), or OTRABU, was a state-owned company that ran trucks and buses in Burundi. It was created in the 1970s, its debts were written off in 1979 and again in 1984, and it was finally liquidated in 1991.
Road transport company.
Due to disputes within and between countries in the Great Lakes region in the 1980s, landlocked countries such as Burundi tried to establish new routes to the ports of Mombasa, Kenya, and Dar es Salaam, Tanzania, that would be secure and economical. 
The (OTRABU) was founded to achieve transit security.
The Ministry of Transport, Posts and Telecommunications owned OTRABU, which had a monopoly on road transport along the Northern Corridor.
OTRABU periodically contracted with the (ONATOUR) to transport peat from its bog sites to Bujumbura.
In 1979 the government of Burundi assumed service of OTRABU's debt due to its financial difficulties.
The Northern Corridor route from Mombasa to Bujumbura, Burundi, is entirely graded and asphalted.
OTRABU obtained sophisticated Mercedes trucks to operate this route, helped by German technical cooperation. 
It had priority on this route from March 1981, but after three years the fleet had deteriorated greatly due to many accidents.
OTRABU's share of the traffic fell to 21% of the total, and it had to cede the route to foreign private importers.
OTRABU was wound up before August 1984.
After its collapse, transport services in the Northern and Central Corridors were provided by private road hauliers, mostly registered in Burundi.
Bus company.
The (OTRABU) was created in 1985.
It operated 45 buses. 
In Bujumbura city it had 12 Mercedes-Benz buses and 21 Isuzu buses.
For intercity transport it had 10 Mercedes-Benz buses, 2 Toyota buses and one Isuzu bus.
In 1985 Japan donated 35 Isuzu buses.
In October 1984 a team from the Japan International Cooperation Agency met with the Burundi government representatives to discuss a project for building bus maintenance facilities for OTRABU in the New Industrial Zone of Bujumbura.
It would include an administration building, 4-bay lubrication / control station, petrol station with storage for , car washing station, workshop / storage complex, lavatory and parking for 100 working buses and for buses needing repair.
A May 1988 report from the International Development Association on a proposed development credit of SDR 64.9 million to the Republic of Burundi found that OTRABU had the potential to become profitable through a rehabilitation program based on partial privatization and elimination of all government subsidies, combined with improvements to internal management, fleet composition and a now focus on profitable activities and customers.
Later in 1988 the government's Service in Charge of Public Enterprises helped prepare a rehabilitation program for OTRABU and other public companies (CADEBU, OTRACO, ONAPHA and Verundi) to form the basis for performance contracts between the government and the companies.
Most prices had been deregulated and the state-owned companies were expected to compete with private companies.
In 1988 OTRABU had to give up transport of petrol and oil products due to strong competition from private companies with new trucks, where OTRABU's fleet was older.
OTRABU was liquidated on 2 September 1991.
It was succeeded by OTRACO.
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