List of current prime ministers by date of assumption of office

This is a list of current prime ministers of the world's sovereign states by the date they took office, from the earliest to the latest.

Hun Sen of Cambodia is the longest-serving current prime minister, having taken office on 14 January 1985.

List

Country	Political system	Name	Assumption	Current length
Cambodia	Constitutional monarchy	Hun Sen	14 January 1985	36 years, 21 days
Samoa	Parliamentary republic	Tuilaepa Aiono Sailele Malielegaoi	23 November 1998	22 years, 73 days
Saint Vincent and the Grenadines	Constitutional monarchy	Ralph Gonsalves	28 March 2001	19 years, 313 days
Dominica	Parliamentary republic	Roosevelt Skerrit	8 January 2004	17 years, 27 days
Singapore	Parliamentary republic	Lee Hsien Loong	12 August 2004	16 years, 176 days
Germany	Parliamentary republic	Angela Merkel	22 November 2005	15 years, 66 days
United Arab Emirates	Constitutional monarchy	Mohammed bin Rashid Al Maktoum	11 February 2006	14 years, 359 days
Fiji	Parliamentary republic	Frank Bainimarama	5 January 2007	14 years, 30 days
Bangladesh	Parliamentary republic	Sheikh Hasina	6 January 2009	12 years, 29 days
Israel	Parliamentary republic	Benjamin Netanyahu	31 March 2009	11 years, 310 days
Hungary	Parliamentary republic	Viktor Orbán	29 May 2010	10 years, 251 days
Netherlands	Constitutional monarchy	Mark Rutte	14 October 2010	10 years, 113 days
Niger	Semi-presidential republic	Brigi Rafini	7 April 2011	9 years, 303 days
Grenada	Constitutional monarchy	Keith Mitchell	20 February 2013	7 years, 350 days
Djibouti	Parliamentary republic	Abdoulkader Kamil Mohamed	1 April 2013	7 years, 309 days
Albania	Parliamentary republic	Edi Rama	15 September 2013	7 years, 142 days
Norway	Constitutional monarchy	Erna Solberg	16 October 2013	7 years, 111 days
Tajikistan	Parliamentary republic	Kokhir Rasulzoda	23 November 2013	7 years, 73 days
Luxembourg	Constitutional monarchy	Xavier Bettel	4 December 2013	7 years, 62 days
Thailand	Constitutional monarchy	Prayut Chan-o-cha	25 August 2014	6 years, 163 days
India	Parliamentary republic	Narendra Modi	26 May 2014	6 years, 254 days
Antigua and Barbuda	Constitutional monarchy	Gaston Browne	13 June 2014	6 years, 236 days
Uganda	Parliamentary republic	Ruhakana Rugunda	18 September 2014	6 years, 139 days
Sweden	Constitutional monarchy	Stefan Löfven	3 October 2014	6 years, 124 days
Mozambique	Semi-presidential republic	Carlos Agostinho do Rosário	17 January 2015	6 years, 18 days
Saudi Arabia	Absolute monarchy	Salman	23 January 2015	6 years, 12 days
Saint Kitts and Nevis	Constitutional monarchy	Timothy Harris	18 February 2015	5 years, 352 days
Namibia	Parliamentary republic	Saara Kuugongelwa	21 March 2015	5 years, 320 days
Trinidad and Tobago	Parliamentary republic	Keith Rowley	9 September 2015	5 years, 148 days
Canada	Constitutional monarchy	Justin Trudeau	4 November 2015	5 years, 92 days
Tanzania	Parliamentary republic	Kassim Majaliwa	20 November 2015	5 years, 76 days
Portugal	Semi-presidential republic	António Costa	26 November 2015	5 years, 70 days
Jamaica	Constitutional monarchy	Andrew Holness	3 March 2016	4 years, 338 days
Libya	Provisional government	Fayez al-Sarraj	30 March 2016	4 years, 311 days
Vietnam	Parliamentary republic	Nguyễn Xuân Phúc	7 April 2016	4 years, 303 days
Laos	Parliamentary republic	Thongloun Sisoulith	20 April 2016	4 years, 290 days
Cape Verde	Semi-presidential republic	Ulisses Correia e Silva	22 April 2016	4 years, 288 days
Republic of the Congo	Semi-presidential republic	Clément Mouamba	23 April 2016	4 years, 287 days
Saint Lucia	Constitutional monarchy	Allen Chastanet	7 June 2016	4 years, 242 days
Equatorial Guinea	Semi-presidential republic	Francisco Pascual Obama Asue	23 June 2016	4 years, 226 days
Croatia	Parliamentary republic	Andrej Plenković	19 October 2016	4 years, 108 days
Estonia	Parliamentary republic	Jüri Ratas	23 November 2016	4 years, 73 days
Uzbekistan	Parliamentary republic	Abdulla Aripov	14 December 2016	4 years, 52 days
Mauritius	Parliamentary republic	Pravind Jugnauth	23 January 2017	4 years, 12 days
Bulgaria	Parliamentary republic	Boyko Borisov	4 May 2017	3 years, 276 days
The Bahamas	Constitutional monarchy	Hubert Minnis	11 May 2017	3 years, 269 days
Serbia	Parliamentary republic	Ana Brnabić	29 June 2017	3 years, 220 days
Rwanda	Parliamentary republic	Édouard Ngirente	30 August 2017	3 years, 158 days
Mongolia	Semi-presidential republic	Ukhnaagiin Khürelsükh	4 October 2017	3 years, 123 days
New Zealand	Constitutional monarchy	Jacinda Ardern	26 October 2017	3 years, 101 days
Iceland	Parliamentary republic	Katrín Jakobsdóttir	30 November 2017	3 years, 66 days
Poland	Semi-presidential republic	Mateusz Morawiecki	11 December 2017	3 years, 54 days
Czech Republic	Parliamentary republic	Andrej Babiš	13 December 2017	3 years, 53 days
Nepal	Parliamentary republic	Khadga Prasad Oli	15 February 2018	2 years, 355 days
Ethiopia	Parliamentary republic	Abiy Ahmed	2 April 2018	2 years, 308 days
Armenia	Parliamentary republic	Nikol Pashinyan	8 May 2018	2 years, 272 days
Guinea	Parliamentary republic	Ibrahima Kassory Fofana	24 May 2018	2 years, 256 days
Barbados	Constitutional monarchy	Mia Mottley	25 May 2018	2 years, 255 days
Italy	Parliamentary republic	Giuseppe Conte	1 June 2018	2 years, 248 days
Spain	Constitutional monarchy	Pedro Sánchez	2 June 2018	2 years, 247 days
Madagascar	Semi-presidential republic	Christian Ntsay	6 June 2018	2 years, 243 days
Egypt	Semi-presidential republic	Moustafa Madbouly	7 June 2018	2 years, 242 days
East Timor	Semi-presidential republic	Taur Matan Ruak	22 June 2018	2 years, 227 days
Pakistan	Parliamentary republic	Imran Khan	18 August 2018	2 years, 170 days
Australia	Constitutional monarchy	Scott Morrison	24 August 2018	2 years, 164 days
Yemen	Provisional government	Maeen Abdulmalik Saeed	18 October 2018	2 years, 109 days
Bhutan	Constitutional monarchy	Lotay Tshering	7 November 2018	2 years, 89 days
São Tomé and Príncipe	Semi-presidential republic	Jorge Bom Jesus	3 December 2018	2 years, 63 days
Cameroon	Parliamentary republic	Joseph Ngute	4 January 2019	2 years, 31 days
Latvia	Parliamentary republic	Krišjānis Kariņš	23 January 2019	2 years, 12 days
Burkina Faso	Semi-presidential republic	Christophe Joseph Marie Dabiré	24 January 2019	2 years, 11 days
Kazakhstan	Parliamentary republic	Askar Mamin	21 February 2019	1 year, 349 days
Central African Republic	Parliamentary republic	Firmin Ngrébada	27 February 2019	1 year, 343 days
Solomon Islands	Constitutional monarchy	Manasseh Sogavare	24 April 2019	1 year, 286 days
Papua New Guinea	Constitutional monarchy	James Marape	30 May 2019	1 year, 250 days
Denmark	Constitutional monarchy	Mette Frederiksen	27 June 2019[1]	1 year, 222 days
Greece	Parliamentary republic	Kyriakos Mitsotakis	8 July 2019	1 year, 211 days
United Kingdom	Constitutional monarchy	Boris Johnson	24 July 2019	1 year, 195 days
Sudan	Parliamentary republic	Abdalla Hamdok	21 August 2019	1 year, 167 days
Democratic Republic of the Congo	Semi-presidential republic	Sylvestre Ilunga	7 September 2019	1 year, 150 days
Georgia	Parliamentary republic	Giorgi Gakharia	8 September 2019	1 year, 149 days
Tuvalu	Parliamentary republic	Kausea Natano	19 September 2019	1 year, 138 days
Azerbaijan	Semi-presidential republic	Ali Asadov	8 October 2019	1 year, 119 days
Tonga	Constitutional monarchy	Pohiva Tuʻiʻonetoa	8 October 2019	1 year, 119 days
Moldova	Parliamentary republic	Ion Chicu	14 November 2019	1 year, 82 days
Kuwait	Constitutional monarchy	Sabah Al-Khalid Al-Sabah	19 November 2019	1 year, 77 days
Sri Lanka	Semi-presidential republic	Mahinda Rajapaksa	21 November 2019	1 year, 75 days
Finland	Parliamentary republic	Sanna Marin	10 December 2019	1 year, 56 days
Cuba	One-party state	Manuel Marrero Cruz	21 December 2019	1 year, 45 days
Bosnia and Herzegovina	Federal parliamentary constitutional republic	Zoran Tegeltija	23 December 2019	1 year, 43 days
Algeria	Parliamentary republic	Abdelaziz Djerad	28 December 2019	1 year, 38 days
Malta	Parliamentary republic	Robert Abela	13 January 2020	1 year, 22 days
South Korea	Presidential republic	Chung Sye-kyun	14 January 2020	1 year, 21 days
Russia	Semi-presidential republic	Mikhail Mishustin	16 January 2020	1 year, 19 days
Qatar	Constitutional monarchy	Khalid bin Khalifa bin Abdul Aziz Al Thani	28 January 2020	1 year, 7 days
Guinea-Bissau	Parliamentary republic	Nuno Gomes Nabiam	28 February 2020	342 days
Malaysia	Constitutional monarchy	Muhyiddin Yassin	1 March 2020	340 days
Ukraine	Semi-presidential republic	Denys Shmyhal	4 March 2020	337 days
Haiti	Semi-presidential republic	Joseph Jouthe	4 March 2020	337 days
Slovenia	Parliamentary republic	Janez Janša	13 March 2020	328 days
Slovakia	Parliamentary republic	Igor Matovič	22 March 2020	320 days
Vanuatu	Parliamentary republic	Bob Loughman	20 April 2020	290 days
Iraq	Parliamentary republic	Mustafa Al-Kadhimi	6 May 2020	274 days
Lesotho	Constitutional monarchy	Moeketsi Majoro	20 May 2020	260 days
Belarus	Presidential republic	Roman Golovchenko	4 June 2020	245 days
Syria	Semi-presidential republic	Hussein Arnous	11 June 2020	238 days
France	Semi-presidential republic	Jean Castex	3 July 2020	216 days
Gabon	Parliamentary republic	Rose Christiane Raponda	16 July 2020	203 days
Guyana	Parliamentary republic	Mark Phillips	2 August 2020	186 days
Mauritania	Semi-presidential republic	Mohamed Ould Bilal	6 August 2020	182 days
Japan	Constitutional monarchy	Yoshihide Suga	16 September 2020	141 days
Somalia	Parliamentary republic	Mohamed Hussein Roble	23 September 2020	134 days
Mali	Semi-presidential republic	Moctar Ouane (acting)	27 September 2020	130 days
Togo	Parliamentary republic	Victoire Tomegah Dogbé	28 September 2020	129 days
Belgium	Constitutional monarchy	Alexander De Croo	1 October 2020	126 days
Kyrgyzstan	Parliamentary republic	Sadyr Japarov	10 October 2020	117 days
Jordan	Constitutional monarchy	Bisher Khasawneh	12 October 2020	115 days
Bahrain	Constitutional monarchy	Salman bin Hamad Al Khalifa	11 November 2020	85 days
Belize	Parliamentary republic	Johnny Briceño	12 November 2020	84 days
Peru	Presidential republic	Violeta Bermúdez	18 November 2020	78 days
Lithuania	Semi-presidential republic	Ingrida Šimonytė	24 November 2020	72 days
Montenegro	Parliamentary republic	Zdravko Krivokapić	4 December 2020	62 days
Eswatini	Absolute monarchy	Themba N. Masuku (acting)	13 December 2020	53 days
Romania	Semi-presidential republic	Florin Cîțu	23 December 2020	43 days