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Ignazio Roberto Maria Marino (pronounced [iɲˈɲattsjo maˈriːno]; born 10 March 1955) is an Italian transplant surgeon who was Mayor of Rome from 2013 to 2015. As a surgeon, he trained with Thomas Starzl, who had pioneered liver transplantion in humans. In 1992–1993, as a member of Thomas Starzl's team at the University of Pittsburgh in the United States, he conducted two baboon-to-human liver transplants. He founded the ISMETT organ transplant center in Palermo, Sicily; Marino was the CEO and the Director of ISMETT from 1997 until 2002. In 2001 he performed the first organ transplant in Italy for a person with HIV. The patient lived for 18 years with full function of the transplanted organ. As a civil rights activist, on October 18, 2014, as Mayor of Rome, Marino registered the marriages of