Joseph Warioba

Last updated
Joseph Warioba
5th Prime Minister of Tanzania
In office
5 November 1985 9 November 1990
President Ali Hassan Mwinyi
Preceded by Salim Ahmed Salim
Succeeded by John Malecela
3rd Attorney General of Tanzania
In office
Preceded by Mark Bomani
Succeeded by Damian Lubuva
Personal details
Born (1940-09-03) 3 September 1940 (age 78)
Bunda, Tanganyika
Nationality Tanzanian
Political party CCM
Alma mater University of Dar es Salaam
Hague Academy of International Law

Joseph Sinde Warioba (born September 3, 1940) served as Prime Minister of Tanzania from 1985 to 1990. Furthermore, he served concurrently as the country's Vice President. He has also served as a judge on the East African Court of Justice and chairman of the Tanzanian Constitutional Review Commission since 2012.

He was born in Bunda, Tanzania. He graduated from the University of East Africa in Dar es Salaam, Tanzania in 1966. From 1966 to 1968, he served as state attorney in Dar es Salaam, and from 1968 to 1970, as solicitor for the City Council. In 1970, he graduated from the Hague Academy of International Law. From 1976 to 1983, he served as the attorney general of Tanzania. From 1983 until his election as prime minister, he served as minister of justice.

Following his tenure as prime minister, he served as a judge on the Hamburg, Germany-based International Tribunal for the Law of the Sea from 1996 to 1999. Furthermore, in 1996, President Benjamin Mkapa appointed him as chairman of the Presidential Commission Against Government Corruption, better known as the Warioba Commission.

Warioba was chosen to lead the Commonwealth Observer Group in the April 2007 Nigerian elections. [1] He gave a positive assessment of the elections, deeming them to be progress while also saying that there were irregularities. [2]

Warioba was appointed on November 2016 by the President of Tanzania John Magufuli as the Chancellor of Sokoine University of Agriculture in Morogoro, Tanzania.


  1. "Tanzania: Former Prime Minister Leads Observer Group for Nigeria Elections", Commonwealth News and Information Service (, April 10, 2007.
  2. "Warioba says Nigerian polls free and fair",, May 3, 2007. Archived September 27, 2007, at the Wayback Machine .
Preceded by
Salim Ahmed Salim
Prime Minister of Tanzania
5 November 1985 – 9 November 1990
Succeeded by
John Malecela
Preceded by
Ali Hassan Mwinyi
Vice President of Tanzania
Succeeded by
John Samuel Malecela