Pietro Grasso (also written Piero Grasso; born 1 January 1945) is an Italian jurist and politician best known for his long career fighting the Sicilian Mafia and for later holding senior political office. Trained and employed as a public prosecutor, he became widely recognised for anti‑mafia investigations and for leading prosecutorial efforts at both the provincial and national levels. After leaving the magistracy he entered parliamentary politics and served as President of the Italian Senate.
Early life and judicial career
Grasso was born in Sicily and built his professional reputation within the Italian judicial system. Over several decades he worked in prosecutorial offices in Palermo and elsewhere in Sicily, where organised‑crime investigations were a major focus. He rose to senior roles within the national anti‑mafia apparatus and helped coordinate inquiries into Cosa Nostra and related criminal networks. His work as an anti‑mafia magistrate earned him national recognition for persistence and institutional leadership.
Political career and public offices
In 2013 Grasso transitioned from the judiciary to politics and was elected to the Italian Senate; colleagues chose him as President of the Senate, one of the highest constitutional offices in Italy, a post he held from 2013 until 2018. When President Giorgio Napolitano resigned in January 2015, the President of the Senate assumed the responsibilities of the head of state: Grasso acted as interim President of the Republic beginning on 14 January 2015 until a successor was elected. Sergio Mattarella subsequently succeeded him as President of Italy, following the constitutional process and parliamentary vote.
Later political activity and positions
After his senate presidency Grasso remained active in public life and in parliamentary politics, aligning with progressive and anti‑mafia causes. He participated in the foundation and leadership of a parliamentary grouping of left‑leaning deputies and senators, seeking to bring justice and anti‑corruption themes into public debate. His background as a magistrate shaped his political profile and public statements, often emphasising rule of law and civic responsibility.
Importance and legacy
Grasso is notable for having moved from a career focused on criminal justice into high parliamentary office, a transition that underlines the continuing public salience of anti‑mafia work in Italy. Observers point to his career as an example of how legal expertise and prosecutorial experience can influence legislative priorities and institutional reform. He remains identified with efforts to confront organised crime and strengthen judicial institutions.
- Born: 1 January 1945 (Sicily)
- Senior anti‑mafia magistrate; served in Palermo and at national level
- President of the Italian Senate (2013–2018)
- Acting President of the Republic from 14 January 2015 until the election of Sergio Mattarella; Napolitano's resignation is noted in contemporaneous accounts (Giorgio Napolitano)
For further reading on the Italian institutions and the role of the Senate president in presidential succession, consult institutional summaries and biographies of key figures. The interplay between the judiciary and politics in Italy continues to shape policy debates about crime, transparency and democratic accountability.