Ignazio Roberto Maria Marino[1] (pronounced [iɲˈɲattsjo maˈriːno]; born 10 March 1955) is an Italian transplant surgeon who was Mayor of Rome from 2013 to 2015.

Shortly after his victory in the elections, he was approached by an organized crime network that rigged public contracts and embezzled funds.

[4] It stated that the Mayor's expenses were made in the interests of Rome for institutional aims and that the alleged facts "did not take place" according to article 530 of the Italian C.P.P., ruling that even the opening of the investigation was not necessary.

Marino was a member of the surgical team which in June 1992 and January 1993 performed two baboon-to-human liver xenotransplants in a clinical trial coordinated by Starzl.

[12] Marino is the recipients of several international medical awards, including the 2010 Award for contributions to the fight against AIDS;[13] Honorary Doctor of Science degree (2015) at the Thomas Jefferson University; the Longmire Professorship of the David Geffen School of Medicine at UCLA and the Longmire Surgical Society Society.

Given his professional background, in his new capacity, he promoted several legislative activities mainly dealing with healthcare, education, scientific research, and bioethics.

[18] In his second tenure as a Senator, Marino gained public exposure due to his strong support for the right to die and a clear advance health care directive law during the dramatic final days of Eluana Englaro, which caused widespread debate and a constitutional crisis within Italy.

[20] Among Marino's projects has been the closing of the Via dei Fori Imperiali and Piazza di Spagna to cars and opening to pedestrian and bicycle traffic only.

[21] On 18 October 2014, Marino registered the marriages of 16 same-sex couples who requested it to the Municipality, which followed similar acts by other Italian mayors.

[22] In only 27 months, the administrative work conducted by Mayor Ignazio Marino, strengthening the city's operating performance, was recognized by all International Rating Agencies.

[23] In April 2015, Mayor Ignazio Marino successfully proposed the candidature of Rome as host city for the 2023 edition of the Ryder Cup, the first ever in Italy, held at the Marco Simone Golf & Country Club from 25 September to 1 October 2023.

[25] On 7 October 2016, Rome court acquitted Marino over the allegations of embezzlement, fraud, and forgery that had been made by the opposition parties of M5S and Fratelli d'Italia and after which he had stepped down to prove his innocence.

The Court also emphasised the radical unfoundedness of the accusatory hypothesis[28] from the outset, which should not have justified even the start of investigations against Marino Since 2013, Ignazio Marino has fostered the interest of several philanthropists in carrying out numerous archaeological restoration operations on Rome's artistic heritage on sites considered UNESCO World Heritage Sites.

Among its prestigious international partners, Jefferson counts Università Cattolica del Sacro Cuore and Fondazione Policlinico Universitario A. Gemelli.

Among Marino's recent scientific interest, his collaboration with the 2012 Nobel Laureate in Economics Alvin Roth and surgeon Michael Rees to implement the so-called Global Kidney Exchange (GKE) program.

GKE aims at matching donors and recipients making kidney transplantation possible for patients who face a variety of immunological, regulatory, and financial barriers.

[40] Since the 2024 European Parliament election, Marino has been serving as deputy chair of the Greens–European Free Alliance (Greens/EFA) group, under the leadership of co-chairs Terry Reintke and Bas Eickhout.