| Alex Ellis | |
| Ambassador From: | United Kingdom |
| Country: | Spain |
| Term Start: | 2024 |
| Monarch1: | Elizabeth II Charles III |
| Primeminister: | Rishi Sunak |
| Predecessor: | Hugh Elliott |
| Office1: | British High Commissioner to India |
| Term Start1: | 2021 |
| Term End1: | 2024 |
| Primeminister1: | Boris Johnson Liz Truss Rishi Sunak |
| Predecessor1: | Sir Philip Barton |
| Successor1: | Lindy Cameron |
| Ambassador From2: | United Kingdom |
| Country2: | Brazil |
| Term Start2: | 2013 |
| Term End2: | 2017 |
| Monarch2: | Elizabeth II |
| Primeminister2: | David Cameron Theresa May |
| Predecessor2: | Alan Charlton |
| Successor2: | Vijay Rangarajan |
| Ambassador From3: | United Kingdom |
| Country3: | Portugal |
| Term Start3: | 2007 |
| Term End3: | 2011 |
| Monarch3: | Elizabeth II |
| Primeminister3: | Gordon Brown David Cameron |
| Predecessor3: | John Buck |
| Successor3: | Jill Gallard |
| Birth Date: | 5 June 1967 |
| Birth Place: | London, United Kingdom |
| Alma Mater: | Magdalene College, Cambridge |
| Honorific Prefix: | Sir |
Sir Alexander Wykeham Ellis (born 5 June 1967) is a British civil servant, currently Ambassador designate to Spain, scheduled to take up his post in Summer 2024.[1] He has previously been High Commissioner to India,[2] Ambassador to Brazil and before that Portugal, and Deputy National Security Adviser for the Integrated Review on diplomacy, development and defence.[3] Ellis was previously the Director General of the Department for Exiting the EU.[4] He had previously been Britain's ambassador to Brazil from July 2013 to January 2017.
Ellis was educated at Dragon School, Oxford, Winchester College and Magdalene College, Cambridge.[5]
Ellis taught history at St Edward's School, Oxford before joining the Foreign and Commonwealth Office (FCO) in 1990. He was British ambassador to Portugal 2007–10 and Director of Strategy at the FCO 2011–13 before being appointed ambassador to Brazil. In November 2016 it was announced that Ellis would become Director General at the Department for Exiting the European Union.[6]
Ellis was appointed Companion of the Order of St Michael and St George (CMG) in the 2013 Queen's Birthday Honours. He was appointed Knight Commander of the Order (KCMG) in the King's Birthday Honours for 2024.[7]