Simon Stiell

Simon Emmanuel Kervin Stiell

Simon Stiell is a Grenadian former government minister and the Executive Secretary of the United Nations Framework Convention on Climate Change. In that role, which he has held since August 2022, he leads the secretariat supporting implementation of the UN climate convention, the Kyoto Protocol and the Paris Agreement.

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About Simon Stiell

Profile information current to 2026-08-22.

Grenada · International civil servant, Government minister, Engineer · 1 affiliation

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Known for: International climate governance; Climate resilience and environmental policy; Grenadian public service
Country: Grenada

International civil servant
Government minister
Engineer

At a glance

Stiell has served as Executive Secretary of the UNFCCC since August 2022.
He was reappointed in June 2025 for a second three-year term as UNFCCC Executive Secretary.
Before joining the UNFCCC, he served as a senior minister in Grenada from March 2013 through June 2022, including five years with responsibility for climate resilience and the environment.
His earlier career included about fourteen years in the technology sector, including senior executive roles and work associated with Nokia and GEC Plessey Telecommunications.

Leadership of the UN climate secretariat

UN Secretary-General António Guterres appointed Stiell as UNFCCC Executive Secretary on 15 August 2022 after consultation with the Conference of the Parties through its Bureau. He leads the secretariat that supports the UN climate convention, the Kyoto Protocol and the Paris Agreement. The UNFCCC states that he was reappointed in June 2025 for a second three-year term.

Grenadian public service

Stiell served as a senior minister in the Government of Grenada from March 2013 through June 2022. His responsibilities included five years as Minister for Climate Resilience and the Environment, as well as earlier roles covering education, human resource development, the environment and agriculture-related matters. He also served in Grenada's Senate and held the position of Leader of Government Business.

Engineering and private-sector background

Before entering government, Stiell spent about fourteen years in the technology sector, including senior executive positions and work associated with Nokia and GEC Plessey Telecommunications. UNFCCC biographical material states that he trained as an engineer at London Metropolitan University and the College of North West London and holds a Master of Business Administration from the University of Westminster.

Affiliations

United Nations Framework Convention on Climate Change Executive Secretary 2022-08–present

Timeline

2013-03 Began service as a senior minister in the Government of Grenada.
2022-06 Concluded senior-ministerial service in the Government of Grenada.
2022-08-15 Appointed by UN Secretary-General António Guterres as Executive Secretary of the UNFCCC after consultation with the Conference of the Parties through its Bureau.
2025-06 Reappointed as UNFCCC Executive Secretary for a second three-year term.

Additional verified details

Current context

Stiell is listed by the UNFCCC and the United Nations as Executive Secretary of the UNFCCC. Current-status finding based on UNFCCC and United Nations leadership pages accessed on the stated date.
The UNFCCC states that Stiell was reappointed in June 2025 for a second three-year term.

Biographical facts

Stiell served as a senior minister in the Government of Grenada from March 2013 through June 2022.
During his Grenada government service, he held the portfolio of Minister for Climate Resilience and the Environment for five years.
He previously served as Grenada's Minister for Education and Human Resource Development, Minister of State with responsibility for Human Resource Development and the Environment, and a Parliamentary Secretary in an agriculture-related ministry.
Stiell served in Grenada's Senate and held the position of Leader of Government Business.
Before entering Grenada's government, he had a technology-sector career of about fourteen years, including senior executive roles and work associated with Nokia and GEC Plessey Telecommunications.
UNFCCC biographical material states that Stiell trained as an engineer at London Metropolitan University and the College of North West London and holds a Master of Business Administration from the University of Westminster.