Air Tanzania Company Limited (ATCL) is the flag carrier airline of Tanzania based in Dar es Salaam with its hub at Julius Nyerere International Airport. It was established as Air Tanzania Corporation (ATC) in 1977 after the dissolution of East African Airways and has been a member of the African Airlines Association since its inception. The airline was wholly owned by the Tanzanian Government until 2002 when it was partially privatised as per the directive of the Bretton Woods Institutions to implement the country's Structural Adjustment Program. The government therefore reduced its shareholding to 51 percent and entered into a partnership with South African Airways.

NMB Bank, is a commercial bank in Tanzania. It is licensed by the Bank of Tanzania, the central bank and national banking regulator.

Nyati Cement is one of the youngest cement manufactures in Tanzania and began operations in July 2014. The factory is located in Kimbiji Village, Temeke District, Dar-es-salaam. The brand Nyati cement operates under the banner of Lake Cement Tanzania ltd.

Precision Air Services Plc is a Tanzanian airline based at Julius Nyerere International Airport in Dar es Salaam, with a minihub at Mwanza Airport. The airline operates scheduled passenger services to Nairobi, Entebbe, and airports in Tanzania.

Tanga Cement is a cement company of Tanzania. The company was founded in 1980 in association with the government of Denmark and in 1989, as a state company of the Tanzanian government, entered into a management contract with Holcim Cement of Switzerland. In 1996, the government began to privatize the company and as of 2007 it is owned primarily by the public and by Holcim Mauritius. Today it is most well known for its simba cement bags, which began production in 1980.

Tanzania Breweries Limited, also referred to as TBL, is the oldest and largest brewing company in Tanzania.

Tanzania Telecommunications Company Limited (TTCL) is the oldest and largest fixed line telecommunications company in Tanzania. The company comes forth from the former Tanzania Posts and Telecommunications Corporation in 1993. TTCL was wholly owned by the Government of Tanzania until the partial privatisation of the company on 23 February 2001.

Twiga Cement (TPCC) is a Tanzanian company that manufactures portland cement. Twiga's cement is produced in grades of Twiga Ordinary and Twiga Extra.