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Order · Republic

Institutions of
San Marino

The world's oldest Republic does not have a modern Constitution: its order rests on the Leges Statutae of the late sixteenth century, on the Ancient Customs and on the Declaration of Rights of 1974. Legislative, executive and judicial powers are exercised independently and collegially.

Captains Regent
2 · 6 months
Parliament Councillors
60
Administrative Castelli
9

Institutional data updated to 2026 · Source: Regency of the Republic of San Marino, Great and General Council

Public Palace in Piazza della Libertà, seat of the Great and General Council
Institutional seat
Public Palace, Piazza della Libertà
§ I — Institutional architecture

One State, three powers

The Sammarinese order rests on an ancient principle: no person may concentrate more than one government function. At the top sit in pairs the Captains Regent, elected every six months by parliament and invested with the functions of Head of State. Around this axis revolve legislative power, entrusted to the Great and General Council, executive power, exercised by the State Congress, and judicial power, divided between the Tribunale Unico, the Judicial Council and the Commission for judicial affairs.

Alongside the traditional powers, the system preserves and values ancient instruments of direct democracy: the Istanza d'Arengo, a legacy of the medieval assembly of family heads, and the referendum in three forms (abrogative, propositive and confirmative). The territory, covering 61.19 km², is divided into nine Castelli each administered by their own Giunta.

Constitutional bodies in summary
Body Function Composition Term
Captains Regent Collegial Head of State 2 Regents from the Council 6 months
Great and General Council Legislative power 60 elected Councillors 5 years
State Congress Executive power Up to 10 Secretaries of State Legislature
Council of the XII Administrative jurisdiction and third instance 12 councillors Legislature
Judicial Organs Judicial power Tribunale Unico, Collegio Garante, Judicial Council Variable
Giunte di Castello Local administration in the 9 Castelli 15 or 21 members 4 years
§ II — The top of the State

The Captains Regent

The Regency is a collegial body. Two Sammarinese citizens, elected from among the members of the Great and General Council, jointly assume the functions of Head of State for a six-month mandate that runs from 1 April or 1 October. Each investiture, preceded by the Oath Ceremony in the Public Palace, coincides with a national holiday. At the end of the mandate the Regency is subjected to the Sindacato, a constitutional and administrative review procedure provided for by the Statutes.

The Regency presides over the Great and General Council, the State Congress and the Council of the XII, and may issue urgent decrees valid for three months, to be ratified within the same term under penalty of lapsing.

«Relinquo vos liberos ab utroque homine.»
— Marinus, 12th-century anonymous hagiography
§ III — The legislative

The Great and General Council

Single-chamber parliament, it inherits directly the ancient Arengo. Sixty Councillors are elected by direct universal suffrage for a five-year legislature. Within the assembly five Permanent Council Commissions established in 1995 operate, each composed of fifteen members and competent by subject matter.

§ IV — The executive

The State Congress

Since 1945 the State Congress holds executive, political and administrative power. It includes up to ten Secretaries of State, equivalent to Italian Ministers, each in charge of one or more sectors. The Secretariat for Foreign Affairs traditionally has a leading role and, by convention, is entrusted to the political leader of the majority coalition.

§ V — The judicial

Tribunale Unico and Collegio Garante

Judicial power is divided between ordinary and administrative jurisdiction. The Tribunale Unico is split into two sections and entrusted to non-Sammarinese magistrates appointed by the Great and General Council; the Conciliating Judges may instead be citizens of the Republic. The Collegio Garante, established by law no. 36 of 26 February 2002, took over the functions of the ancient Council of the XII as the supreme judicial body.

§ VI — Tools of participation

Direct democracy and territory

The Sammarinese order keeps tools of participation of rare intensity. The Istanza d'Arengo is held every six months: at noon on the first Sunday after the appointment of the Regency, citizens, individually or in groups, submit to the Regency questions of public interest. When the Council accepts the request, the State Congress is bound to translate it into law.

The referendum exists in abrogative, propositive and confirmative form: to start the procedure the promoting committee deposits the question signed by sixty voters; admissibility is judged by the Collegio Garante. In parallel, local elections renew every four years the nine Giunte di Castello, which administer the territory and appoint the Capitano di Castello.

FAQ · Useful answers

Frequently asked questions

How many Captains Regent are there?
The Captains Regent are always two, exercise the functions of Head of State collegially, and stay in office for six months from 1 April to 30 September and from 1 October to 31 March.
How many Councillors make up the Great and General Council?
The Great and General Council, the single-chamber parliament of the Republic, is made up of 60 Councillors elected by direct universal suffrage for a five-year legislature.
Does San Marino have a Constitution?
The Republic does not have a Constitution in the modern sense. The institutional framework rests on the Declaration of Citizens' Rights of 1974 and on the Leges Statutae Republicae Sancti Marini of the late sixteenth century, alongside the Ancient Customs.
What is the Istanza d'Arengo?
The Istanza d'Arengo is the popular petition tool that allows every citizen to submit questions of public interest to the Regency on the first Sunday after the investiture of the Captains.
Into how many Castelli is the territory divided?
The territory of the Republic is divided into nine Castelli, each administered by a Giunta elected every four years.
Who holds executive power?
Executive power lies with the State Congress, the government body composed of the Secretaries of State appointed by the Great and General Council.