|Diezani Alison-Madueke at the World Economic Forum on Africa in 2012|
|Federal Minister of Transportation|
26 July 2007 – 17 December 2008
|Preceded by||Precious Sekibo|
|Succeeded by||Ibrahim Bio|
|Federal Minister of Mines & Steel Development|
23 December 2008 – 17 March 2010
|Preceded by||Sarafa Tunji Ishola|
|Succeeded by||Musa Mohammed Sada|
|Federal Minister of Petroleum Resources|
6 April 2010
|Preceded by||Rilwanu Lukman|
|President of OPEC|
27 November 2014
|Preceded by||Abdourhman Atahar Al-Ahirish|
|Born||December 6, 1960
Port Harcourt, Rivers State, Nigeria
Diezani K. Alison-Madueke (born 6 December 1960) is the first female President of OPEC, elected at the 166th OPEC Ordinary meeting in Vienna on 27 November 2014. She was Nigeria's minister of transportation on 26 July 2007. She was moved to Mines and Steel Development in 2008, and in April 2010 was appointed Minister of Petroleum Resources.
Diezani K. Agama was born in Port Harcourt, Rivers State, Nigeria. Her father was Chief Frederick Abiye Agama. She studied architecture in England and then at Howard University in the United States. She graduated from Howard with a Bachelor's degree on 8 December 1992. She returned to Nigeria and joined Shell Petroleum Development Corporation that year. In 2002, she attended Cambridge University for her MBA. In April 2006, Shell appointed her its first female Executive Director in Nigeria.
Since 1999 she has been married to Admiral Allison Madueke (retired), one-time Chief of Naval Staff who was at various times governor of Imo and Anambra State. She has two sons, Chimezie Madueke and Ugonna Madueke. In September 2011 Alison-Madueke was awarded an honorary Doctorate in Management Sciences by the Nigerian Defence Academy, Kaduna.
Federal cabinet positions
Diezani Alison-Madueke has held three significant positions in the Nigerian federal government. She was appointed Transport Minister in July 2007. On 23 December 2008, she was named as Minister of Mines and Steel Development. After Vice-President Goodluck Jonathan became acting President in February 2010, he dissolved the cabinet on 17 March 2010, and swore in a new cabinet on 6 April 2010 with Alison-Madueke as Minister for Petroleum Resources.
Minister of Petroleum Resources
As Minister of Petroleum Resources, Alison-Madueke has pledged to transform Nigeria's oil and gas industry so that all Nigerians benefit.
In April 2010, President Goodluck Jonathan signed the Nigerian Content Act, which aims to increase the percentage of petroleum industry contracts that are awarded to indigenous Nigerian businesses - a reaction to the domination of the sector by foreign operators.
One of the most controversial policies introduced under Alison-Madueke is the government's plan to remove state subsidies on fuel prices. Alison-Madueke has supported the discontinuation of the subsidy on the grounds that it "poses a huge financial burden on the government, disproportionately benefits the wealthy, [and] encourages inefficiency, corruption and diversion of scarce public resources away from investment in critical infrastructure."
Alison-Madueke is the first woman to hold the position of Minister of Petroleum Resources in Nigeria, and in October 2010 she became the first woman to head a country delegation at the annual OPEC conference. She was also the first female Minister of Transportation, and the first woman to be appointed to the board of Shell Petroleum Development Company Nigeria. On the 27th of November, 2014 she got elected as the first female President of OPEC 
On working in male-dominated sectors, Alison-Madueke said she warned the young women she mentored while at Shell to "change their mode of thinking."
In June 2008 Alison-Madueke was subject to a Senate probe after it emerged that as Transport Minister she had paid 30.9 billion naira ($263 million) to contractors between 26 and 31 December 2007. She is said to be worth over a billion naira .
However, she has never been officially charged or tried for these allegations and has strongly denied any wrongdoing. Diezani Allison was alleged to have spent billions of Nigerian dollars inappropriately on private jets whilst many Nigerians suffer. She is also alleged to be responsible for some missing $20 billion dollars. She is also widely accused of reckless spending of Govt funds.   
In September 2008 there was an unsuccessful attempt to kidnap Alison-Madueke at her house in Abuja with her son Chimezie Madueke.
In October 2009, the Senate of Nigeria indicted Diezani Alison-Madueke and recommended prosecution for the alleged transfer of 1.2 billion naira into the private account of a toll company without due process and in breach of concession agreement.  However, the allegations have never been taken to law, and the Minister maintains her innocence.
- "Nigerian Minister Becomes 1st OPEC Female President". NUJEurope. 27 November 2014. Retrieved 2014-11-28.
- KUNLE HAMILTON (14 July 2007). "Diezani Allison-Madueke ...A passion from the creeks to the peak". Daily Sun. Retrieved 2009-12-15.
- "Diezani Alison-Madueke’s year of graduation faulted by Howard University". Nigeria News. 7 August 2011. Archived from the original on 10 November 2011.
- "Shell names first female director, three others". Sun News Publishing. 24 April 2006. Retrieved 2009-12-15.
- Ndigbo, Ogbuefi (18 January 2012). "Diezani Allison Madueke`s sons' Scandalous private jet lifestyle". Elombah. Archived from the original on 3 November 2012.
- "Yet another garland for Diezani Alison-Madueke". Vanguard (Nigeria). September 17, 2011. Retrieved 2011-12-21.
- "Alison-Madueke resumes at Mines and Steel ministry". The Punch. 24 December 2008. Retrieved 2009-12-15.[dead link]
- "New Cabinet Unveiled as Nigeria's Acting President Shores Up Position". IHS Global Insight. 7 April 2010. Archived from the original on 22 April 2015.
- Diezani Alison-Madueke. "Oil and Gas Working for All Nigeria Part 1". Retrieved 2012-01-12.
- Hamisu Muhammad (4 May 2010). "Content Law - of Content And Contempt". Daily Trust. Retrieved 2012-01-12.
- Tunde Dodondawa (9 January 2012). "FG outlines benefits of fuel subsidy removal". Nigerian Tribune. Retrieved 2012-01-12.
- "NDA awards Alison-Madueke doctorate degree". SweetCrude Reports. 17 September 2011. Retrieved 2012-01-12.
- Okafor, Chineme (27 November 2014). "Petroleum Minister, Alison-Madueke Elected First OPEC Female President". This Day Live. Archived from the original on 22 April 2015.
- "NPDC’s Appointment of a Funding Partner Has Been Greatly Misunderstood – Alison-Madueke". ThisDay. 12 June 2011. Retrieved 2012-01-12.
- "I Haven't Committed Any Crime - Diezani Alison Madueke". Nigeria News. 22 April 2015. Archived from the original on 22 April 2015.
- Udo, Bassey (18 March 2015). "Missing $20bn: Alison-Madueke sues PREMIUM TIMES, APC, 9 others". The Premium Times. Archived from the original on 22 April 2015.
- "Diezani Alison-Madueke Maintained Rooms In Two New York Luxury Hotels During UN Assembly". Sahara Reporters. 28 September 2012. Archived from the original on 22 April 2015.
- "The Diezani Allison-Madueke Saga: Another Private Jet Uncovered!". Bella Naija. 26 March 2014. Archived from the original on 22 April 2015.
- "Nigerian Senate probes mystery govt payments". Mail & Guardian (South Africa). 27 June 2008. Archived from the original on 22 April 2015.
- Modibbo, Ibrahim (29 September 2008). "Nigeria: Police Foil Attempt to 'Kidnap' Allison-Madueke". Leadership (Abuja, Nigeria). Archived from the original on 22 April 2015.
- archiveurl=http://www.webcitation.org/6XzGue90U "N300bn TRANSPORTATION contractS:Senate report indicts Anenih, Okonjo-Iweala, Ciroma". Vanguard News (Lagos, Nigeria). 12 October 2009.