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The Koç family is a Turkish family of business people founded by Vehbi Koç, one of the wealthiest self-made people in Turkey. His grandsons, the third generation of the Koç family, today run Turkey’s largest group of companies, Koç Holding, the only Turkish company on the Fortune Global 500 list. In 2010, the family's wealth was estimated at over USD$10 billion, ranking them as the wealthiest family in Turkey.
- Vehbi Koç was born on July 20, 1901, in Ankara and died on February 25, 1996, in İstanbul. In 1926, he married Sadberk, the daughter of his aunt on his mother's side. Starting in trade at a very young age, he built up a broad net of companies, and founded Koç Holding in 1963. He became the richest person in Turkey. His son Rahmi Mustafa Koç and his three daughters, Semahat, Sevgi and Suna, succeeded him.
- Semahat Sevim Koç, born 1928 in Ankara, is the first child of Vehbi Koç. She graduated from the American College for Girls in Istanbul before studying at the Goethe Institute in Germany. She was married to Dr. Nusret Arsel from 1956 until his death in 2014. Semahat is member of the board directors of Koç Holding and the Koç Foundation. She is president of the Semahat Arsel Nursing Education and Research Center.
- Rahmi Mustafa Koç (born 1930 in Ankara) received his BA degree from Johns Hopkins University, US, after graduating from Robert College in İstanbul. He served at various managerial posts in the group companies, and in 1984 took over the leadership of the business empire his father had founded. Rahmi married Çiğdem Meseretçioğlu, but after the birth of their three sons, the couple divorced. In 2003, he transferred his chair to his eldest son Mustafa, and assumed the title of honorary chairman of Koç Holding.
- Mustafa Vehbi Koç, born 1960 in İstanbul, was the eldest son of Rahmi Koç. He died on January 21, 2016, following a heart attack. He was educated in the Lyceum Alpinum Zuoz in Switzerland, and graduated in 1984 from George Washington University, US. After serving at various posts, this third generation member of the family was appointed president of Koç Holding in 2003. He was married to Caroline Giraud, the daughter of a renowned Levantine family from İzmir.
- Mehmet Ömer Koç was born on March 24, 1962, in Ankara as the second son of Rahmi Koç. He graduated from Robert College in İstanbul and Millfield School in Somerset, UK. Ömer was educated first at the Georgetown University, Washington D.C., and then obtained his BA and master's degree from Columbia University, New York. After working in several posts in the Koç group companies, he is currently chair of the energy group within the holding. Since February 2016, he is the president of Koç Holding
- Ali Yıldırım Koç (born April 2, 1967, in İstanbul) is the youngest son of Rahmi Koç. After finishing high school at Harrow School, London, he received his B.A. in 1989 from Rice University, Houston, Texas, followed by his Master's degree from Harvard University in 1997. After working in various companies in the USA and in the Koç Group, he became chief executive of the information technologies group of the holding. He recently married Nevbahar Demirağ. He was vice-president of Turkish sports club Fenerbahçe SK.[clarification needed]
- Sevgi Koç was born 1938 as the third child of Vehbi Koç. She graduated from the American College for Girls in Istanbul and married Erdoğan Gönül, a member of the board of directors of Koç Holding. She was also made a member of the board of directors of both Koç Holding and the Koç Foundation. Sevgi also presided over the executive committee of the Sadberk Hanim Museum in İstanbul, and was a columnist in the Turkish newspaper Hürriyet. She died on September 12, 2003, in İstanbul from cancer, shortly after her husband.
- Suna Koç, born 1941, is the fourth child of Vehbi Koç. She graduated from American College for Girls in Istanbul, and was then educated at the Bosphorus University, İstanbul. She is married to İnan Kıraç, a high-ranking executive of the Koç Group. They have one child. Suna has served in various posts in the holding, most recently as vice president. She is also a board member of various foundations and educational institutions. Due to her contributions in education, health and social service in Turkey, Suna was awarded the Supreme Service Medal by state president Süleyman Demirel in 1997. In 1999 The London Business School granted her honorary membership for her contributions in leadership at the Koç Holding and in the education of children in Turkey.
- Thousands bid farewell to leading businessman Mustafa Koç at funeral in Istanbul, Hürriyet Daily News, 3 March 2016.
- "Koç family is Turkey's wealthiest". hurriyetdailynews.com. 2010-11-23. Retrieved 2017-04-03.
- "Mustafa Koç hayatını kaybetti". Hürriyet (in Turkish). 2016-01-21. Retrieved 2016-01-21.
- Onlar İzmirli Hristiyan Türkler, Sabah, 2 October 2005