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Sir Simon Gass | |
|---|---|
 Gass in June 2011 | |
| Chairman of the Joint Intelligence Committee | |
| In office 2019 – July 2023 | |
| Prime Minister | Theresa May Boris Johnson Rishi Sunak |
| Preceded by | Charles Farr |
| Succeeded by | Madeleine Alessandri |
| British Ambassador to Iran | |
| In office 2009–2011 | |
| Prime Minister | Gordon Brown David Cameron |
| Preceded by | Sir Geoffrey Adams |
| Succeeded by | Dominick Chilcott |
| Personal details | |
| Born | 2 November 1956 |
| Spouse | Marianne Enid Stott (1980–present) |
| Children | 3 |
| Alma mater | University of Reading |
Sir Simon Lawrance Gass GCMG CVO (born 2 November 1956) is a British civil servant. He chaired the Joint Intelligence Committee from 2019 to 2023 and served as the British Prime Minister's representative on Afghanistan from 2021 to 2022 concurrently. Between 2018 and 2019, he was the Commandant of the Royal College of Defence Studies. During his diplomatic career, he served as British ambassador to Greece and to Iran. In May 2023, it was announced he was stepping down as Chairman of the Joint Intelligence Committee and succeeded by Madeleine Alessandri.