| Post: | Ambassador |
| Body: | Brazil to the United Kingdom |
| Native Name: | Embaixador do Brasil no Reino Unido |
| Insignia: | Coat of arms of Brazil.svg |
| Insigniasize: | 120px |
| Insigniacaption: | Coat of arms of Brazil |
| Department: | Ministry of Foreign Affairs |
| Incumbent: | Antonio Patriota |
| Incumbentsince: | 15 September 2023 |
| Style: | Mr Ambassador (informal) His Excellency (diplomatic) |
| Reports To: | Minister of Foreign Affairs |
| Appointer: | The President |
| Appointer Qualified: | with Senate advice and consent |
| Termlength: | No fixed term |
| Seat: | 14-16 Cockspur Street SW1Y 5BL London |
| First: | Manoel Pessoa, The Viscount of Itabaiana |
| Formation: | 1823 |
| Website: | Embassy of Brazil in London |
A list of the Ambassadors of Brazil, or other heads of mission, to the United Kingdom:
| Name | Title | Service | Notes |
|---|---|---|---|
| Manoel Rodrigues Gameiro Pessoa, Viscount of Itabaiana | Minister Plenipotentiary | 1823 | |
| Felisberto Caldeira Brant, Marquis of Barbacena | Minister Plenipotentiary | 1824 | |
| Manoel Rodrigues Gameiro Pessoa | Minister Plenipotentiary | 1825 | |
| José Araujo Ribeiro, Viscount of Rio Grande | Minister Plenipotentiary | 1831 | |
| Manoel Antonio Galvão | Minister Plenipotentiary | 1835 | |
| Francisco Jê Acaiaba de Montezuma | Minister Plenipotentiary | 1840 | |
| José Marques Lisboa | Minister Plenipotentiary | 1841 | |
| Sergio Teixeira de Macedo | Minister Plenipotentiary | 1851 - 54 | |
| Francisco Ignácio de Carvalho Moreira | Minister Plenipotentiary | 1855 - 63 | |
| Francisco Ignácio de Carvalho Moreira | Minister Plenipotentiary | 1866 - 67 | |
| José Carlos de Almeida Arêas, Viscount of Ourem | Minister Plenipotentiary | 1868 - 73 | |
| Francisco Ignácio de Carvalho Moreira, Baron of Penedo | Minister Plenipotentiary | 1878 - 89 | |
| João Arthur Souza Corrêa | Minister Plenipotentiary | 1890 - 1900 | |
| Joaquim Nabuco | Minister Plenipotentiary | 1900 | |
| Francisco Régis de Oliveira | Minister Plenipotentiary | 1905 - 13 | |
| Eduardo Lisboa | Minister Plenipotentiary | 1913 - 14 | |
| Fontoura Xavier | Minister Plenipotentiary | 1913 - 20 | On 2 January 1919, the Brazilian legation in London was upgraded to an embassy. |
| Domício da Gama | Ambassador Extraordinary and Plenipotentiary | 1920 - 24 | First Brazilian ambassador to the UK. |
| Raul Régis de Oliveira | Ambassador | 1925 - 37 | |
| João Joaquim de Lima e Silva Moniz de Aragão | Ambassador | 1940 - 52 | |
| Samuel de Souza-Leão Gracie | Ambassador | 1952 - 56 | |
| Francisco de Assis Chateaubriand de Mello | Ambassador | 1957 - 61 | |
| José Cochrane de Alencar | Ambassador | 1961 - 63 | |
| Carlos Alves de Souza | Ambassador | 1964 - 66 | |
| Jayme Sloan Chermont | Ambassador | 1966 - 68 | |
| Sérgio Corrêa Affonso da Costa | Ambassador | 1968 - 74 | |
| Roberto Campos | Ambassador | 1975 - 82 | |
| Mario Gibson Alves Barboza | Ambassador | 1982 - 86 | |
| Celso de Souza e Silva | Ambassador | 1986 - 88 | |
| Paulo Tarso Flecha de Lima | Ambassador | 1990 - 93 | |
| Rubens Antonio Barbosa | Ambassador | 1994 - 99 | |
| Sérgio Silva Amaral | Ambassador | 1999 - 2001 | |
| Celso Luiz Nunes Amorim | Ambassador | 2001 - 02 | |
| José Maurício de Figueiredo Bustani | Ambassador | 2002 - 08 | |
| Carlos Augusto R. Santos-Neves | Ambassador | 2008 - 10 | |
| Roberto Jaguaribe | Ambassador | 2010 - 15 | |
| Eduardo dos Santos | Ambassador | 2015 - 18 | |
| Fred Arruda | Ambassador | 2018 - 23 | |
| Antonio Patriota | Ambassador | 2023 - present |