List of ambassadors of the United Kingdom to Argentina

• 1824–1826: Woodbine Parish, Consul-General; Chargé d'Affaires from 1825[1]
• 1826–1828: Lord Ponsonby, Envoy Extraordinary and Minister Plenipotentiary[2]
• 1828–1831: Woodbine Parish, Chargé d'Affaires[1]
• 1831–1832: Henry Stephen Fox (appointed 1828)[3]
• 1832–1834: Philip Yorke Gore (secretary of legation[4]), Chargé d'Affaires[1]
• 1834–1835: Hamilton Charles James Hamilton (appointed 1832)[5]
• 1835–1844: John Mandeville[6]

• 1844–1845: William Gore Ouseley[7]
• 1845–1847: Relations suspended
• 1847 (May–June): Lord Howden (minister to Brazil), special mission jointly with Count Walewski of France[1]
• 1847–1848: Relations suspended
• 1848–1851: Henry Southern[8]
• 1851–1854: Captain Robert Gore, Chargé d'Affaires and Consul-General[9]
• 1854–1859: William Christie, Chargé d'Affaires and Consul-General from 1854,[10] Minister Plenipotentiary from 1856[11]
• 1859–1865: Edward Thornton[12]

• 1865–1866: Richard Edwardes appointed[13] but did not proceed
• 1866–1867: George Buckley Mathew[14]
• 1867–1868: William Lowther[15]
• 1868–1872: William Stuart[16]

• 1872–1878: Lionel Sackville-West[17]
• 1878–1879: Clare Ford[18]
• 1879–1881: Sir Horace Rumbold, 8th Baronet[19]
• 1881–1884: George Petre[20]
• 1884–1885: Edmund Monson[21][22]
• 1885–1896: Francis Pakenham[23]
• 1896–1902: William Barrington[24]
• 1902–1906: William Haggard (also Minister Plenipotentiary to Paraguay)[25]
• 1906–1910: Walter Townley
• 1910–1919: Sir Reginald Tower
• 1919–1922: Ronald Macleay
• 1923–1925: Sir Beilby Alston
• 1925–1927: Sir Malcolm Robertson

• 1927–1929: Sir Malcolm Robertson[26]
• 1930–1933: Sir Ronald Macleay
• 1933–1935: Sir Henry Chilton
• 1935–1937: Sir Nevile Henderson
• 1937–1942: Sir Esmond Ovey
• 1942–1946: David Victor Kelly (withdrawn for consultations 8 July 1944 – 25 April 1945)
• 1946–1948: Sir Reginald Leeper
• 1948–1952: Sir John Balfour
• 1951–1955: Sir Henry Mack
• 1955–1957: Sir Francis Evans
• 1957–1961: Sir John Ward
• 1961–1964: Sir George Middleton
• 1964–1969: Sir Michael Creswell
• 1969–1972: Sir Michael Hadow
• 1973–1975: Sir Donald Hopson
• 1975–1977: Sir Derrick Ashe
• 1980–1982: Anthony Williams

From 1982 to 1990, following the Falklands War, there were no diplomatic relations between the UK and Argentina. There was no Ambassador, but the embassy building remained open, as the British Interest Section of the Swiss Embassy, rather than as the British Embassy. The Argentine Embassy in London came under the Brazilian flag during the same period. Diplomatic relations were restored in 1990.

• 1990–1993: Humphrey Maud[27]
• 1994–1997: Sir Peter Hall
• 1997–2000: William Marsden
• 2000–2004: Robin Christopher[28]
• 2004–2008: John Hughes
• 2008–2012: Shan Morgan
• 2012–2016: John Freeman[29]
• 2016–2021: Mark Kent[30]
• 2021–present: Kirsty Hayes[31]