🇸🇲 San Marino
Parliamentary republic, diarchy

Denise Bronzetti
Prime Minister · 577 days in office
How the political system works in San Marino
San Marino is governed as a parliamentary republic with a diarchy. Its prime minister, Denise Bronzetti, has led the country since Apr 1, 2025. San Marino has had 100 prime ministers since 1629.
Tenure records
Longest-serving
Domenico Fattori
2,190 days · 12 terms
Shortest-serving
Lorenzo Bugli
182 days
Average tenure
183 days
Denise Bronzetti: 215% above average
Female leaders
18 of 100
First: Maria Lea Pedini-Angelini (1981)
Recent prime ministers by days in office
Is a leader's tenure getting longer or shorter in San Marino?
Across 168 completed terms, the average prime minister of San Marino has served 183 days (about 0.5 years). That has stayed fairly steady: the last five completed terms averaged 182 days.
One completed term Average tenure per decade
All prime ministers of San Marino
| # | Name | Took office | Left office | Days |
|---|---|---|---|---|
| 172 | William Casali | Oct 1, 2026 | Incumbent | 29 |
| 171 | Oct 1, 2025 | Apr 1, 2026 | 182 | |
| 170 | Oct 1, 2025 | Apr 1, 2026 | 182 | |
| 169 | Oct 1, 2023 | Apr 1, 2024 | 183 | |
| 168 | Oct 1, 2022 | Apr 1, 2023 | 182 | |
| 167 | Manuel Ciavatta | Oct 1, 2022 | Apr 1, 2023 | 182 |
| 166 | Oscar Mina | Apr 1, 2022 | Oct 1, 2022 | 183 |
| 165 | Apr 1, 2022 | Oct 1, 2022 | 183 | |
| 164 | Oct 1, 2021 | Apr 1, 2022 | 182 | |
| 163 | Oct 1, 2021 | Apr 1, 2022 | 182 | |
| 162 | Apr 1, 2021 | Oct 1, 2021 | 183 | |
| 161 | Apr 1, 2021 | Oct 1, 2021 | 183 | |
| 160 | Mirko Dolcini | Oct 1, 2020 | Apr 1, 2021 | 182 |
| 159 | Oct 1, 2020 | Apr 1, 2021 | 182 | |
| 158 | Apr 1, 2020 | Oct 1, 2020 | 183 | |
| 157 | Grazia Zafferani | Apr 1, 2020 | Oct 1, 2020 | 183 |
| 156 | Oct 1, 2019 | Apr 1, 2020 | 183 | |
| 155 | Luca Boschi | Oct 1, 2019 | Apr 1, 2020 | 183 |
| 154 | Nicola Selva | Apr 1, 2019 | Oct 1, 2019 | 183 |
| 153 | Michele Muratori | Apr 1, 2019 | Oct 1, 2019 | 183 |
| 152 | Oct 1, 2018 | Apr 1, 2019 | 182 | |
| 151 | Luca Santolini | Oct 1, 2018 | Apr 1, 2019 | 182 |
| 150 | Stefano Palmieri | Apr 1, 2018 | Oct 1, 2018 | 183 |
| 149 | Matteo Ciacci | Apr 1, 2018 | Oct 1, 2018 | 183 |
| 148 | Matteo Fiorini | Oct 1, 2017 | Apr 1, 2018 | 182 |
| 147 | Enrico Carattoni | Oct 1, 2017 | Apr 1, 2018 | 182 |
| 146 | Mimma Zavoli | Apr 1, 2017 | Oct 1, 2017 | 183 |
| 145 | Vanessa D'Ambrosio | Apr 1, 2017 | Oct 1, 2017 | 183 |
| 144 | Oct 1, 2016 | Apr 1, 2017 | 182 | |
| 143 | Fabio Berardi | Oct 1, 2016 | Apr 1, 2017 | 182 |
| 142 | Massimo Andrea Ugolini | Apr 1, 2016 | Oct 1, 2016 | 183 |
| 141 | Gian Nicola Berti | Apr 1, 2016 | Oct 1, 2016 | 183 |
| 140 | Oct 1, 2015 | Apr 1, 2016 | 183 | |
| 139 | Lorella Stefanelli | Oct 1, 2015 | Apr 1, 2016 | 183 |
| 138 | Apr 1, 2015 | Oct 1, 2015 | 183 | |
| 137 | Apr 1, 2015 | Oct 1, 2015 | 183 | |
| 136 | Guerrino Zanotti | Oct 1, 2014 | Apr 1, 2015 | 182 |
| 135 | Gianfranco Terenzi | Oct 1, 2014 | Apr 1, 2015 | 182 |
| 134 | Apr 1, 2014 | Oct 1, 2014 | 183 | |
| 133 | Apr 1, 2014 | Oct 1, 2014 | 183 | |
| 132 | Anna Maria Muccioli | Oct 1, 2013 | Apr 1, 2014 | 182 |
| 131 | Gian Carlo Capicchioni | Oct 1, 2013 | Apr 1, 2014 | 182 |
| 130 | Denis Amici | Apr 1, 2013 | Oct 1, 2013 | 183 |
| 129 | Apr 1, 2013 | Oct 1, 2013 | 183 | |
| 128 | Oct 1, 2012 | Apr 1, 2013 | 182 | |
| 127 | Teodoro Lonfernini | Oct 1, 2012 | Apr 1, 2013 | 182 |
| 126 | Maurizio Rattini | Apr 1, 2012 | Oct 1, 2012 | 183 |
| 125 | Italo Righi | Apr 1, 2012 | Oct 1, 2012 | 183 |
| 124 | Gabriele Gatti | Oct 1, 2011 | Apr 1, 2012 | 183 |
| 123 | Matteo Fiorini | Oct 1, 2011 | Apr 1, 2012 | 183 |
| 122 | Apr 1, 2011 | Oct 1, 2011 | 183 | |
| 121 | Apr 1, 2011 | Oct 1, 2011 | 183 | |
| 120 | Giovanni Francesco Ugolini | Oct 1, 2010 | Apr 1, 2011 | 182 |
| 119 | Andrea Zafferani | Oct 1, 2010 | Apr 1, 2011 | 182 |
| 118 | Marco Conti | Apr 1, 2010 | Oct 1, 2010 | 183 |
| 117 | Glauco Sansovini | Apr 1, 2010 | Oct 1, 2010 | 183 |
| 116 | Oct 1, 2009 | Apr 1, 2010 | 182 | |
| 115 | Stefano Palmieri | Oct 1, 2009 | Apr 1, 2010 | 182 |
| 114 | Massimo Cenci | Apr 1, 2009 | Oct 1, 2009 | 183 |
| 113 | Oscar Mina | Apr 1, 2009 | Oct 1, 2009 | 183 |
| 112 | Ernesto Benedettini | Oct 1, 2008 | Apr 1, 2009 | 182 |
| 111 | Assunta Meloni | Oct 1, 2008 | Apr 1, 2009 | 182 |
| 110 | Apr 1, 2008 | Oct 1, 2008 | 183 | |
| 109 | Rosa Zafferani | Apr 1, 2008 | Oct 1, 2008 | 183 |
| 108 | Oct 1, 2007 | Apr 1, 2008 | 183 | |
| 107 | Oct 1, 2007 | Apr 1, 2008 | 183 | |
| 106 | Apr 1, 2007 | Oct 1, 2007 | 183 | |
| 105 | Apr 1, 2007 | Oct 1, 2007 | 183 | |
| 104 | Roberto Giorgetti | Oct 1, 2006 | Apr 1, 2007 | 182 |
| 103 | Antonio Carattoni | Oct 1, 2006 | Apr 1, 2007 | 182 |
| 102 | Loris Francini | Apr 1, 2006 | Oct 1, 2006 | 183 |
| 101 | Gianfranco Terenzi | Apr 1, 2006 | Oct 1, 2006 | 183 |
| 100 | Antonello Bacciocchi | Oct 1, 2005 | Apr 1, 2006 | 182 |
| 99 | Claudio Muccioli | Oct 1, 2005 | Apr 1, 2006 | 182 |
| 98 | Cesare Gasperoni | Apr 1, 2005 | Oct 1, 2005 | 183 |
| 97 | Fausta Morganti | Apr 1, 2005 | Oct 1, 2005 | 183 |
| 96 | Roberto Raschi | Oct 1, 2004 | Apr 1, 2005 | 182 |
| 95 | Giuseppe Arzilli | Oct 1, 2004 | Apr 1, 2005 | 182 |
| 94 | Apr 1, 2004 | Oct 1, 2004 | 183 | |
| 93 | Paolo Bollini | Apr 1, 2004 | Oct 1, 2004 | 183 |
| 92 | Giovanni Lonfernini | Oct 1, 2003 | Apr 1, 2004 | 183 |
| 91 | Oct 1, 2003 | Apr 1, 2004 | 183 | |
| 90 | Giovanni Francesco Ugolini | Apr 1, 2002 | Oct 1, 2002 | 183 |
| 89 | Fabio Berardi | Apr 1, 2001 | Oct 1, 2001 | 183 |
| 88 | Luigi Lonfernini | Apr 1, 2001 | Oct 1, 2001 | 183 |
| 87 | Gianfranco Terenzi | Oct 1, 2000 | Apr 1, 2001 | 182 |
| 86 | Enzo Colombini | Oct 1, 2000 | Apr 1, 2001 | 182 |
| 85 | Gian Marco Marcucci | Apr 1, 2000 | Oct 1, 2000 | 183 |
| 84 | Maria Domenica Michelotti | Apr 1, 2000 | Oct 1, 2000 | 183 |
| 83 | Giuseppe Arzilli | Oct 1, 1999 | Apr 1, 2000 | 183 |
| 82 | Marino Bollini | Oct 1, 1999 | Apr 1, 2000 | 183 |
| 81 | Antonello Bacciocchi | Apr 1, 1999 | Oct 1, 1999 | 183 |
| 80 | Rosa Zafferani | Apr 1, 1999 | Oct 1, 1999 | 183 |
| 79 | Paolo Bollini | Oct 1, 1998 | Apr 1, 1999 | 182 |
| 78 | Loris Francini | Apr 1, 1998 | Oct 1, 1998 | 183 |
| 77 | Maurizio Rattini | Oct 1, 1996 | Apr 1, 1997 | 182 |
| 76 | Oct 1, 1996 | Apr 1, 1997 | 182 | |
| 75 | Marino Venturini | Oct 1, 1995 | Apr 1, 1996 | 183 |
| 74 | Marino Bollini | Apr 1, 1995 | Oct 1, 1995 | 183 |
| 73 | Gian Luigi Berti | Oct 1, 1993 | Apr 1, 1994 | 182 |
| 72 | Patrizia Busignani | Apr 1, 1993 | Oct 1, 1993 | 183 |
| 71 | Romeo Morri | Oct 1, 1992 | Apr 1, 1993 | 182 |
| 70 | Ernesto Benedettini | Apr 1, 1992 | Oct 1, 1992 | 183 |
| 69 | Oct 1, 1991 | Apr 1, 1992 | 183 | |
| 68 | Edda Ceccoli | Oct 1, 1991 | Apr 1, 1992 | 183 |
| 67 | Cesare Gasperoni | Oct 1, 1990 | Apr 1, 1991 | 182 |
| 66 | Gloriana Ranocchini | Oct 1, 1989 | Apr 1, 1990 | 182 |
| 65 | Marino Vagnetti | Apr 1, 1989 | Oct 1, 1989 | 183 |
| 64 | Umberto Barulli | Apr 1, 1988 | Oct 1, 1988 | 183 |
| 63 | Gianfranco Terenzi | Oct 1, 1987 | Apr 1, 1988 | 183 |
| 62 | Renzo Renzi | Apr 1, 1987 | Oct 1, 1987 | 183 |
| 61 | Carlo Franciosi | Apr 1, 1987 | Oct 1, 1987 | 183 |
| 60 | Giuseppe Arzilli | Oct 1, 1986 | Apr 1, 1987 | 182 |
| 59 | Marino Venturini | Apr 1, 1986 | Oct 1, 1986 | 183 |
| 58 | Ubaldo Biordi | Oct 1, 1985 | Apr 1, 1986 | 182 |
| 57 | Enzo Colombini | Apr 1, 1985 | Oct 1, 1985 | 183 |
| 56 | Giuseppe Amici | Oct 1, 1984 | Apr 1, 1985 | 182 |
| 55 | Marino Bollini | Oct 1, 1984 | Apr 1, 1985 | 182 |
| 54 | Giorgio Crescentini | Apr 1, 1984 | Oct 1, 1984 | 183 |
| 53 | Gloriana Ranocchini | Apr 1, 1984 | Oct 1, 1984 | 183 |
| 52 | Renzo Renzi | Oct 1, 1983 | Apr 1, 1984 | 183 |
| 51 | Giuseppe Maiani | Apr 1, 1982 | Oct 1, 1982 | 183 |
| 50 | Marino Venturini | Apr 1, 1982 | Oct 1, 1982 | 183 |
| 49 | Ubaldo Biordi | Oct 1, 1981 | Apr 1, 1982 | 182 |
| 48 | Apr 1, 1981 | Oct 1, 1981 | 183 | |
| 47 | Giuseppe Amici | Oct 1, 1979 | Apr 1, 1980 | 183 |
| 46 | Marino Bollini | Apr 1, 1979 | Oct 1, 1979 | 183 |
| 45 | Ermenegildo Gasperoni | Oct 1, 1978 | Apr 1, 1979 | 182 |
| 44 | Marino Venturini | Apr 1, 1976 | Oct 1, 1976 | 183 |
| 43 | Marino Vagnetti | Oct 1, 1971 | Apr 1, 1972 | 183 |
| 42 | Luigi Lonfernini | Apr 1, 1971 | Oct 1, 1971 | 183 |
| 41 | Giancarlo Ghironzi | Oct 1, 1969 | Apr 1, 1970 | 182 |
| 40 | Giancarlo Ghironzi | Apr 1, 1961 | Oct 1, 1961 | 183 |
| 39 | Giuseppe Maiani | Oct 1, 1955 | Apr 1, 1956 | 183 |
| 38 | Oct 1, 1941 | Apr 1, 1942 | 182 | |
| 37 | Apr 1, 1937 | Oct 1, 1937 | 183 | |
| 36 | Apr 1, 1932 | Oct 1, 1932 | 183 | |
| 35 | Oct 1, 1926 | Apr 1, 1927 | 182 | |
| 34 | Apr 1, 1923 | Oct 1, 1923 | 183 | |
| 33 | Luigi Lonfernini | Oct 1, 1915 | Apr 1, 1916 | 183 |
| 32 | Domenico Fattori | Apr 1, 1914 | Oct 1, 1914 | 183 |
| 31 | Luigi Lonfernini | Oct 1, 1910 | Apr 1, 1911 | 182 |
| 30 | Domenico Fattori | Apr 1, 1900 | Oct 1, 1900 | 183 |
| 29 | Domenico Fattori | Apr 1, 1895 | Oct 1, 1895 | 183 |
| 28 | Marino Fattori | Oct 1, 1893 | Apr 1, 1894 | 182 |
| 27 | Domenico Fattori | Oct 1, 1889 | Apr 1, 1890 | 182 |
| 26 | Marino Fattori | Apr 1, 1887 | Oct 1, 1887 | 183 |
| 25 | Domenico Fattori | Apr 1, 1886 | Oct 1, 1886 | 183 |
| 24 | Marino Fattori | Apr 1, 1882 | Oct 1, 1882 | 183 |
| 23 | Domenico Fattori | Oct 1, 1881 | Apr 1, 1882 | 182 |
| 22 | Domenico Fattori | Apr 1, 1878 | Oct 1, 1878 | 183 |
| 21 | Innocenzo Bonelli | Apr 1, 1877 | Oct 1, 1877 | 183 |
| 20 | Domenico Fattori | Oct 1, 1874 | Apr 1, 1875 | 182 |
| 19 | Marino Fattori | Oct 1, 1873 | Apr 1, 1874 | 182 |
| 18 | Domenico Fattori | Oct 1, 1870 | Apr 1, 1871 | 182 |
| 17 | Innocenzo Bonelli | Apr 1, 1870 | Oct 1, 1870 | 183 |
| 16 | Domenico Fattori | Oct 1, 1866 | Apr 1, 1867 | 182 |
| 15 | Innocenzo Bonelli | Apr 1, 1866 | Oct 1, 1866 | 183 |
| 14 | Innocenzo Bonelli | Apr 1, 1862 | Oct 1, 1862 | 183 |
| 13 | Domenico Fattori | Oct 1, 1861 | Apr 1, 1862 | 182 |
| 12 | Domenico Fattori | Apr 1, 1857 | Oct 1, 1857 | 183 |
| 11 | Innocenzo Bonelli | Apr 1, 1857 | Oct 1, 1857 | 183 |
| 10 | Domenico Maria Belzoppi | Apr 1, 1853 | Oct 1, 1853 | 183 |
| 9 | Domenico Maria Belzoppi | Apr 1, 1849 | Oct 1, 1849 | 183 |
| 8 | Domenico Maria Belzoppi | Oct 1, 1845 | Apr 1, 1846 | 182 |
| 7 | Lodovico di Marino Belluzzi | Oct 1, 1843 | Apr 1, 1844 | 183 |
| 6 | Domenico Maria Belzoppi | Apr 1, 1842 | Oct 1, 1842 | 183 |
| 5 | Domenico Maria Belzoppi | Oct 1, 1838 | Apr 1, 1839 | 182 |
| 4 | Lodovico di Marino Belluzzi | Apr 1, 1834 | Oct 1, 1834 | 183 |
| 3 | Federico Gozi | Oct 1, 1640 | Apr 1, 1641 | 182 |
| 2 | Federico Gozi | Apr 1, 1634 | Oct 1, 1634 | 183 |
| 1 | Federico Gozi | Oct 1, 1629 | Apr 1, 1630 | 182 |
Officeholder history via Wikidata. Multiple rows for one person indicate separate terms.
Frequently asked questions
- Who is the Prime Minister of San Marino?
- Denise Bronzetti has been Prime Minister of San Marino since Apr 1, 2025.
- How is the leader of San Marino chosen?
- San Marino is governed as a parliamentary republic with a diarchy. Its prime minister, Denise Bronzetti, has led the country since Apr 1, 2025. San Marino has had 100 prime ministers since 1629.
- Who is the longest-serving Prime Minister of San Marino?
- Domenico Fattori, with 2,190 days in office across 12 terms.
- Are leaders serving longer or shorter terms in San Marino?
- Across 168 completed terms, the average prime minister of San Marino has served 183 days (about 0.5 years). That has stayed fairly steady: the last five completed terms averaged 182 days.
- Has San Marino ever had a female prime minister?
- Yes. San Marino has had 18 female prime ministers. The first was Maria Lea Pedini-Angelini, who took office in 1981.