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Explainer-Who are the candidates running for UN secretary-general? - Headlines news and analysis from Global Banking & Finance Review
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Explainer-Who are the candidates running for UN secretary-general?

Published by Global Banking & Finance Review

Posted on August 21, 2026

5 min read

· Last updated: August 21, 2026

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Meet the Leading Candidates Running for United Nations Secretary-General

Overview of the 2027 United Nations Secretary-General Election

GENEVA, Aug 21 (Reuters) - The 10th United Nations secretary-general will be chosen this year for a five-year term starting on January 1, 2027.

A second informal poll took place on Friday and showed Guyana's Carolyn Rodrigues Birkett was narrowly ahead, according to sources close to the process.

Here are the candidates so far running to take over from outgoing U.N. chief Antonio Guterres.

Rafael Grossi

Background and Experience

Grossi, a 65-year-old career diplomat from Argentina, has been a high-profile director general of the U.N. nuclear watchdog for the last six years.

While the International Atomic Energy Agency has long policed Iran's nuclear programme, Grossi led negotiations aimed at salvaging parts of a 2015 nuclear deal between Tehran and major powers after U.S. President Donald Trump's decision to pull the United States out of it in 2018. His critics say he has gone too far in trying to cut deals with Iran.

Diplomatic Achievements

A multilingual father of eight, Grossi has raised both his and the IAEA's profile with his shuttle diplomacy in international crises. 

His clearest success was getting a small IAEA team stationed at the Russian-occupied Zaporizhzhia nuclear power plant in Ukraine. 

Support and Challenges

Many diplomats consider him as a frontrunner after his years spent trying to keep onside the five permanent members of the U.N. Security Council, whose backing is crucial for the top job.

However, Russia has expressed reservations about his campaign.

Rebeca Grynspan

Background and Vision

Grynspan, 70, depicts herself as a reform‑minded multilateralist who has battled gender barriers and has had a lifelong belief in the U.N. and its commitment to peace, development and human rights.

A former vice president of Costa Rica who heads the U.N. Conference on Trade and Development, Grynspan said she stepped back from duties until September to avoid conflicts of interest during the campaign. 

Potential Historic Firsts

If elected, Grynspan would be the first woman as secretary‑general. She said she had to make trade‑offs between family life and public service at UNCTAD and that being the first woman in charge there shaped her leadership. 

"I am not waiting for special treatment. I want equal treatment," she told Reuters.

Leadership Style

An economist, Grynspan describes herself as a "mature leader" who would lead a more agile U.N. through collaboration with other players while defending its core values.

Michelle Bachelet

Political Career

Bachelet, 74, is a two-time president of Chile and a former U.N. High Commissioner for Human Rights, who also served from 2010 to 2013 as executive director of women's rights agency U.N. Women.

Support and Criticism

Although supported by Brazil and Mexico, in March Chile withdrew its backing for Bachelet after a rightward shift in the country's leadership.

Bachelet has faced criticism from U.S. conservatives for her pro-choice stance on abortion, and in April, Washington's U.N. envoy, Mike Waltz, appeared to torpedo her bid by saying he shared a U.S. senator's concerns about her suitability.

Republican Senator Pete Ricketts said Bachelet had not done enough as U.N. human rights chief to label China's actions against Uyghur Muslims a genocide. Beijing has not stated its position on her candidacy. 

Macky Sall

Background and Priorities

The 64-year-old geologist was Senegal's president for 12 years until 2024. 

Sall seeks to support developing countries burdened by debt and has called for an overhaul of the Security Council as developing nations seek permanent seats on the most powerful U.N. body.

Vision for the UN

"More than ever, a reinvented multilateralism remains the best way to respond to the challenges of a world in full transformation," he said on X.

Nomination and Representation

Sall was nominated by Burundi. If chosen, he would be the third African secretary-general after Boutros Boutros-Ghali and Kofi Annan.

Maria Fernanda Espinosa

Political and Diplomatic Experience

Espinosa was foreign affairs minister and defence minister in Ecuador in the government of former President Rafael Correa. She was nominated by Antigua and Barbuda.

Espinosa, 61, has also advised the U.N. and non-governmental organisations on biodiversity, and climate change and Indigenous peoples' policies. 

UN Experience and Vision

Former roles as Ecuador's ambassador to the U.N. and president of the General Assembly have given her inside knowledge of the global institution, she said in her vision statement.

"I offer a candidacy grounded in a simple conviction: the UN must recover the courage to prioritise, the discipline to deliver, and the political confidence to act with purpose," she said.

Carolyn Allison Farida Rodrigues Birkett

Career and Achievements

A career diplomat and former politician, Rodrigues Birkett has served as Guyana's permanent representative to the U.N. since 2020. She was the first woman and the highest-ranking Indigenous person to serve as Guyana's foreign minister.

She has held senior roles at the U.N. Food and Agriculture Organization. If elected, Rodrigues Birkett would become the first woman and first Caribbean national to lead the United Nations.

Key Pledges

Rodrigues Birkett has pledged to make the U.N. more effective by strengthening conflict prevention and advancing climate action.

Olara Otunnu

Background and Nomination

Otunnu, a diplomat and former U.N. under-secretary-general, was nominated by Uganda and has called for the restoration of the global body's moral authority. At 75, he is the oldest of the current candidates for the role.

Vision and Priorities

In his vision statement, Otunnu stressed the need to continue institutional reforms and said he would give immediate priority to efforts to help end major international conflicts.

Focus Areas

He also pledged to work to establish a body to oversee U.N. work on AI and highlighted the need for climate change action that does not undermine economic development.

Ivonne Baki

Background

Baki, an Ecuadorean diplomat born to Lebanese immigrant parents, was nominated by Tonga in August. She lived in L

Key Takeaways

  • Carolyn Rodrigues‑Birkett of Guyana, a career diplomat and former foreign minister, leads in public town hall polls, securing around 46‑49% support during recent informal dialogues. (newsroom.gy)
  • In the first informal Security Council straw poll on July 30, 2026, Rebeca Grynspan of Costa Rica received 10 “encourage” votes, edging out Rodrigues‑Birkett at nine and Rafael Grossi at seven. (noticias.uol.com.br)
  • The full candidate field includes Rafael Grossi (Argentina), Michelle Bachelet (Chile), Rebeca Grynspan (Costa Rica), María Fernanda Espinosa (Ecuador), Macky Sall (Senegal), and Carolyn Rodrigues‑Birkett (Guyana), with Olara Otunnu (Uganda) also recently added. (newsroom.gy)

References

Frequently Asked Questions

Who are the main candidates running for UN secretary-general?
Notable candidates include Rafael Grossi, Rebeca Grynspan, Michelle Bachelet, Macky Sall, and Maria Fernanda Espinosa.
When will the new UN secretary-general start their term?
The new UN secretary-general will begin a five-year term on January 1, 2027.
What backgrounds do the candidates have?
The candidates are former presidents, diplomats, economists, and UN officials, reflecting diverse experience in global and political affairs.

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