Diezani K. Alison-Madueke (onye a mụrụ n'abali isii n'ọnwa iri abụọ n'afọ 1960) bụ otu onye ndọrọ ọchichi nke mba Nigerian bụkwara nwanyi mbụ bụ onye isi (President of OPEC). Aghọpụtara ya na Nzukọ 166th nke ndi OPEC  Vienna n'abali 27 n'ọnwa iri n'otu n'afọ 2014. Ọ bụrụ onye isi n'ahụ maka Ụgbọ Njem na 26 July 2007. Ezigara ya na 'Mines and Steel Development' na 2008, aghọpụtara ya dika onye isi 'Minister of Petroleum Resources' na April 2010. A mụrụ Diezani K. Agama na  Port Harcourt, Rivers State, Nigeria. Nna ya bụ Chief Frederick Abiye Agama. O gụrụ Architecture na England nakwa Howard University nke di na United States. Ọ gụchara bachelor's degree na Howard n'abali asatọ n'ọnwa iri n'abụọ n'afọ 1992. Ọ lọtara Nigeria bido ọrụ na Shell Petroleum Development Corporation n'otu afọ a. N'afọ 2002, ọ gụrụ akwụkwọ na Cambridge Judge Business School ebe O nwetara MBA degree. Na nlọta ya na Naijiria,A ghọpụtara Diezani Alison-Madueke ka ọ bụrụ Ọnye Isi ndi Shell n'afọ 2006.