The Ambassador of the United Kingdom to Bulgaria is the United Kingdom's foremost diplomatic representative in Bulgaria, and in charge of the UK's diplomatic mission in Sofia.

• 1903–1908: Sir George Buchanan
• 1909–1911: Mansfeldt Findlay
• 1911–1915: Sir Henry Bax-Ironside
• 1915–1920: No ambassador due to First World War
• 1920–1921: Sir Arthur Peel
• 1921–1928: Sir William Erskine
• 1928–1929: Rowland Sperling
• 1929–1933: Sydney Waterlow
• 1933–1936: Charles Bentinck
• 1936–1938: Maurice Peterson
• 1938–1941: George Rendel
• 1941–1946: No ambassador due to Second World War

• 1947–1949: John Sterndale Bennett
• 1949–1951: Paul Mason
• 1951–1954: John Carvell
• 1954–1956: Geoffrey Furlonge
• 1956–1958: Richard Speaight
• 1958–1960: Anthony Lambert
• 1960–1963: Anthony Lincoln

• 1964–1966: William Harpham^[1]
• 1966–1970: Desmond Crawley^[2]
• 1970–1973: Donald Logan^[3]
• 1973–1976: Edwin Bolland^[4]
• 1976–1980: John Cloake^[5]
• 1980–1983: Giles Bullard^[6]
• 1983–1986: John Snodgrass^[7]
• 1986–1989: John Fawcett^[8]
• 1989–1994: Richard Thomas^[9]
• 1994–1998: Roger Short
• 1998–2001: Richard Stagg^[10]
• 2001–2003: Ian Soutar^[11]
• 2004–2007: Jeremy Hill^[12]
• 2007–2011: Steve Williams
• 2011–2015: Jonathan Allen^[13]
• 2015–August 2020: Emma Hopkins^[14][15]
• August 2020–August 2024: Rob Dixon^[15]
• From August 2024^[update]: Nathaniel Copsey^[16]