Professor Adelardus Lubango Kilangi was the 9th Attorney General of Tanzania.
Professor Kilangi was born 6 April 1969. Kilangi was a member of the African Union Commission on International Law. He also served as the president of the commission from 2012 to 2014. Prior to the appointment he was also a director at St. Augustine University of Tanzania and served at various capacities at the university. In 2013 Kilangi released research work, "The Principle of Permanent Sovereignty over Natural Resources: Its Application in Regulating the Mineral Sector in Tanzania".
Kilangi succeeded George Masaju and preceded Eliezer Feleshi. Kilangi was sworn in by President John Pombe Magufuli on Monday, 9 November 2020 at State House in Dodoma
In December 2021, Kilangi was appointed as the Tanzanian ambassador to Brazil.