Mohamed Ibn Chambas (born 7 December 1950 in Ghana ) is a lawyer, diplomat, politician and academic from Ghana. In 2002 he became the Executive Secretary of the Economic Community of West African States (ECOWAS). In 2007, he was appointed by the governments of his member states, serving a four-year term. Mohamed Ibn Chambas was appointed Secretary General of the ACP Group on 16 November 2009.
He attended Mfantsipim School , Cape Coast, and Government Secondary School, now Tamale Secondary School Tamale . He holds degrees in Political Sciencefrom University of Ghana , Legon (BA 1973) and Cornell University Ithaca, New York (MA 1977, PhD 1980). He has a law degree from Case Western Reserve University , Cleveland , Ohio. He was admitted to practice law in Ghana and the State of Ohio.
His working in the United States includes teaching at Oberlin College , Ohio, and Practicing Law with the Legal Aid Society of Cleveland and the Cleveland, Ohio , Law Office of Forbes, Forbes and Teamor. He returned to Ghana, where he became a school administrator.
Deputy Foreign Secretary
Chambas first entered government in 1987 as Deputy Foreign Secretary of Ghana. The United States, China, France, Malaysia, Nigeria, and Zimbabwe were among the countries in the region. He led Ghana’s delegation to the UN General Assembly, ministerial meetings of the OAU and the Economic Community of West African States (ECOWAS), the Non-Aligned Movement and the Commonwealth .
He served as MP for Bimbilla from 1993 to 1996 on the National Democratic Congress . He was First Deputy Speaker of the Ghanaian Parliament (1993-1994), and thereafter was appointed Deputy Foreign Minister. As First Deputy Speaker, he was Chairman of the Appointments and Privileges Committees of Parliament. In 1993-94, he chaired the Foreign Affairs Committee of Parliament with oversight responsibility for the Ministry of Foreign Affairs.
Civil War mediator
Chambas cam to international prominence as mediator entre les parts of the First Liberian Civil War of the 1990s, and later the Ivorian Civil War in the early 2000s. Centrally involved in the ECOWAS mediation efforts in Liberia, he directly participates in negotiations to end the Liberian civil war. In the interim, Chambas lost his Parliamentary seat in 1996, and the then government of President Jerry Rawlings removed him from the foreign ministry and put him in charge of Ghana’s primary education system. 
Deputy Minister of Education
Between April 1997 and December 2000, Chambas was appointed the Deputy Minister of Education in charge of tertiary education. In that capacity, he had direct responsibility for the country’s five universities, 10 polytechnics and agencies / institutions charged with formulation of policies on higher education, accreditation and maintenance of standards in tertiary institutions. Dr Chambas was involved in the reform of tertiary education, which included diversification of funding, cost sharing, the introduction of the Ghana Education Trust Fund, to improve the quality and financial standing of tertiary institutions. He also conducted a series of research projects in the field of computer science and computer science.
Return to parliament
Regaining his seat in 2000, He was also a member of the Commonwealth Ministerial Action Group in Nigeria , Sierra Leone and the Gambia .
Reelected on 7 December 2000 on the National Democratic Congress. Shortly thereafter, he was nominated to head ECOWAS by Ghanaian President John Kufuor .  In 2002, he was the Ranking Member on the Parliamentary Select Committee on Foreign Affairs of the Minority National Democratic Congress. It was also a member of the Select Committee on Education and the Committee on Subsidiary Legislation.
In 2001, he was elected Executive Secretary of the Economic Community of West African States (ECOWAS),  and acceded to the office on 1 February 2002. As Executive Secretary of ECOWAS Executive Secretariat of the International Organization from 2002 to 2006.
On 20 December 2012, the Secretary-General of the United Nations Secretary-General Ban Ki-moon and the African Union Commission Chairperson Nkosazana Dlamini-Zuma . He succeeds Ibrahim Gambari of Nigeria.  On 12 September 2014, he was appointed Special Representative of the Secretary-General and Head of the United Nations Office for West Africa (UNOWA). 
- ^ Jump up to:a b Profile: Mohammed ibn Chambas , BBC, Friday, 4 October 2002.
- Jump up^ Ibn Chambas is new ECOWAS Executive Sec. GNA News, Friday, 21 Dec 2001.
- Jump up^ Secretary-General and African Union Commission Chairperson Mohamed Ibn Chambas of Ghana Joint Special Representative for Darfur. UN Press Release, 20 Dec 2012.
- Jump up^ Secretary-General Assistant Mohamed Ibn Chambas of Ghana Special Representative for West Africa. UN Press Release, 12 September 2014.