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Simon Harris -

In Ireland, Leo Varadkar was the youngest Taoiseach (prime minister) in the country's history when he was elected in 2017 at the age of 38. However, Varadkar announced his sudden resignation in the middle of his second term on March 20 for "personal and political" reasons. This left the leadership of the country and of the governing party, Fine Gael, up for grabs. On March 24, Fine Gael announced Simon Harris as Varadkar's replacement. Harris is 37, making him the youngest Taoiseach in Irish history.

He officially took office on Tuesday, April 9, and made some powerful statements in his first speech as Taoiseach. Harris condemned Israel's conduct in Gaza and vowed "not to be silent." He continued, “In Gaza, we are witnessing a humanitarian catastrophe. And we are seeing innocent children, women, and men being starved and slaughtered." Harris immediately made himself one of the most outspoken critics of Israel in the West. Harris has a history of leaning left on domestic issues too, supporting the vote to legalize abortion in Ireland. Until his election, he served as the Minister for Further and Higher Education, Research, Innovation and Science of Ireland. 

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Katrín Jakobsdóttir -

Katrín Jakobsdóttir has been serving as the prime minister of Iceland since 2017. She is 48 years old.

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Evika Siliņa -

Evika Siliņa has been serving as the prime minister of Latvia since September 15, 2023. She is 48 years old.

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Ana Brnabić -

Ana Brnabić has been serving as the prime minister of Serbia since 2017. She is the first woman, first openly gay individual, and longest-serving person to hold the office. She is 48 years old.

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Giorgia Meloni -

Italy's prime minister since October 2022, and the first woman to hold the position, Giorgia Meloni is 47.

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Volodymyr Zelensky -

Volodymyr Zelensky has been serving as the sixth president of Ukraine since 2019. He is 46 years old.

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Emmanuel Macron -

The 46-year-old has been president of France since 2017. He became the country's youngest president at the age of 39.

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Robert Abela -

Robert Abela has served as prime minister of Malta since 2020. He is 46.

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Mette Frederiksen -

Mette Frederiksen has served as prime minister of Denmark since 2019. The second woman to hold the position, she is also the youngest prime minister in Danish history. She was elected at the age of 41. 

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Kaja Kallas -

Estonia's prime minister since 2021, Kaja Kallas is 46 years old.

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Irakli Kobakhidze -

The prime minister of Georgia since early 2024, Irakli Kobakhidze is 45 years old.

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Xavier Espot Zamora -

Xavier Espot Zamora is the current prime minister of Andorra, serving since 2019. He is 44 years old.

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Jigme Khesar Namgyel Wangchuck -

Jigme Khesar Namgyel Wangchuck is the fourth "Dragon King," the monarch of Bhutan. He took power at the age of 26 when his father, Jigme Singye Wangchuck, abdicated. He turned 44 in 2024.

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Rishi Sunak -

The first British-Asian prime minister, Rishi Sunak has held the position since 2022. He is 43 years old.

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Tamim bin Hamad Al Thani -

Qatar's current emir, Tamim bin Hamad Al Thani, rose to power in 2013. He is 43 years old.

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Luvsannamsrain Oyun-Erdene -

Mongolia's prime minister since 2017, Luvsannamsrain Oyun-Erdene is 43 years old.

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Nayib Bukele -

The 43rd president of El Salvador, serving since 2019, Nayib Bukele is 42 years old.

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Serdar Berdimuhamedow -

Serdar Berdimuhamedow, 42, is the third and current president of Turkmenistan, this since 2022.

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Vjosa Osmani -

Since 2021, Vjosa Osmani has been serving as the second female president of Kosovo. She is 41 years old.

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Assimi Goïta -

After climbing the ranks in the Malian military, Assimi Goïta led a successful coup that saw him take power as interim president in 2021, a position he still holds. He is 41 years old.

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Kim Jong Un -

The supreme leader of North Korea since 2011, Kim Jong Un is believed to be 40 years old.

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Succès Masra -

Succès Masra has served as the prime minister of Chad since January 1, 2024. Born August 30, 1983, Masra is 40.

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Mahamat Déby -

At the age of 39, Mahamat Déby is the transitional president of Chad.

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Mohammed bin Salman -

The crown prince and prime minister of Saudi Arabia, Mohammed bin Salman is 38 years old. He is considered by many to be the de facto ruler of Saudi Arabia.

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Gabriel Boric -

Serving as the 37th and current president of Chile since March 2022, Gabriel Boric is 38. He became the country's youngest-ever president at the age of 35.

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Milojko Spajić -

Montenegro's prime minister since 2023, Milojko Spajić is 36 years old.

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Daniel Noboa -

Daniel Noboa is the 48th president of Ecuador, since November 23, 2023. At 36, he's the second-youngest president in the country's history.

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Ibrahim Traoré -

Ibrahim Traoré is the interim leader of Burkina Faso since the 2022 coup d'état, which ousted interim president Paul-Henri. At age 35, Traoré is currently the second-youngest serving state leader in the world.

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Gabriel Attal -

On January 9, 2024, President Emmanuel Macron appointed Gabriel Attal as France's youngest and first openly gay prime minister. He was 34 years old at the time.

Sources: (Business Insider) (France 24)

See also: World leaders with the longest reigns

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