Mehmet Şimşek (d. 1 Ocak 1967, Gercüş, Batman), Kürt kökenli Türk siyasetçi.
Ankara Üniversitesi Siyasal Bilgiler Fakültesi İktisat bölümünü bitiren Şimşek sonrasında yüksek lisansını İngiltere'de University of Exeter'de tamamlamıştır.
Temmuz 2007 Seçimleri'nde Ak Parti Gaziantep miletvekili, Haziran 2011 Seçimleri'nde Ak Parti Batman miletvekili olarak meclise girdi. 60. hükümette 2007 yılından Nisan 2009'a kadar "Ekonomiden Sorumlu Devlet Bakanlığı" görevini, 2009 Mayıs ayından günümüze kadar ise "Maliye Bakanlığı" görevini üstlenmektedir.
Haziran 2013'te twitter üzerinden Harvard Üniversitesi profesörü Dani Rodrik ile girdiği polemikte, büyüme rakamlarının nominal olarak ölçülmesi gerektiğini savunarak iktisat camiasında eleştiri konusu oldu. Kendisinin Türkiye Cumhuriyeti'nin yanı sıra İngiltere vatandaşlığı da bulunmaktadır. ABD'li Emerging Markets dergisi tarafından "Gelişmekte olan Avrupa ülkeleri Yılın Maliye Bakanı" seçildi.
Mehmet Şimşek was born on 1 January 1967 to a Kurdish family in the village of Arıca (Kafro 'Elayto), Mardin Province. Şimşek is married and speaks English fluently. He has both British and Turkish citizenships.
He is the Minister of Finance of Turkey in the cabinet of re-elected Prime Minister Recep Tayyip Erdoğan. He was elected to the Parliament for Gaziantep in the general election on July 22, 2007. Mehmet Şimşek was the State Minister for Economic Affairs from August 2007 to April 2009. On May 1, 2009, he was appointed Minister of Finance.
He is a member of the Justice and Development Party.
Şimşek earned his B.Sc. in Economics from Ankara University in 1988. After working as research assistant in the chair of international economics and economic development, he was awarded a state scholarship to the University of Exeter in the United Kingdom, where he earned his M.Phil. in Finance and Investments in 1993.
Şimşek previously worked as the chief economist and strategist for emerging Europe, Middle East and Africa region at Merrill Lynch in London for 7 years. At this time he had a number of contacts with the Turkish authorities and the Central Bank and had worked with the AK Party government on economic policy.
He also served as senior economist and bank analyst for Deutsche-Bender Securities from 1998 to 2000. Mr Şimşek spent about a year in New York where he worked for UBS Securities in 1997. Prior to that, he was a senior economist at the US Embassy in Ankara for almost four years.