The Ambassador of the United Kingdom to the Socialist Republic of Vietnam is the United Kingdom's foremost diplomatic representative in Vietnam, and in charge of the UK's diplomatic mission in Hanoi.
The list below shows British ambassadors to the Republic of Vietnam (South Vietnam) at its capital, Saigon (now Ho Chi Minh City), from 1954 after the Geneva Conference which separated French Indochina into its component states of Laos, Cambodia and Vietnam and temporarily partitioned Vietnam (although the Geneva agreement was not accepted by South Vietnam) until 1975 when North and South Vietnam were reunified. During that period the British government maintained a consulate-general in Hanoi. The British embassy is now in Hanoi with a consulate-general in Ho Chi Minh City.