Tansu Penbe Çiller (pronounced (born October 9, 1946) is an economist and politician in Turkey. She was Turkey's first and so far only female Prime Minister.
She is the daughter of a Turkish governor of Bilecik province during the 1950s. She graduated from the School of Economics at Robert College after finishing the American College for Girls in Istanbul. She received her M.S. from the University of New Hampshire and Ph.D. from the University of Connecticut. She completed later on her postdoctoral studies at Yale University. In 1978, she became a lecturer at Bosphorus University in Istanbul and in 1983 she was appointed as professor by the same institution. She also worked in the now-defunct Istanbul Bank as president of the company.
After teaching at several universities as a professor, she entered politics in November 1990, joining the conservative True Path Party (DYP). She was first elected to parliament in 1991 as deputy of Istanbul and served as Minister of State in charge of economics in the coalition government of Süleyman Demirel. On June 13, 1993, she became the party's leader and later the Prime Minister of a coalition government. After the withdrawal of the Republican People's Party (CHP) from the coalition in 1995 she attempted to form a minority government, which failed. After that she agreed to form another cabinet with CHP and went for general elections.