The Ambassador of the United Kingdom to Lithuania is the United Kingdom's foremost diplomatic representative in the Republic of Lithuania, and in charge of the UK's diplomatic mission in Vilnius.
From 1921 to 1940, British Ministers were accredited to Estonia and Latvia as well as Lithuania; they were based in Riga.
No representation 1940–91. Lithuania was incorporated into the Soviet Union in 1940, and regained its independence in 1991.