List of ambassadors of the United Kingdom to Russia

UK Ambassador to the Russian Federation Британский Посол в России
Royal Arms of His Majesty's Government
Incumbent Nigel Casey since 2023
Style	His Excellency
Reports to	Secretary of State for Foreign and Commonwealth Affairs
Residence	Moscow
Appointer	Charles III
Inaugural holder	The Lord St Helens First Ambassador Extraordinary and Plenipotentiary of the United Kingdom to Russia The Lord Bloomfield First Envoy Extraordinary and Minister Plenipotentiary to Russia Sir John Crampton, Bt First Ambassador to Russia
Formation	1801 Ambassadors Extraordinary and Plenipotentiary 1844 Envoys Extraordinary and Ministers Plenipotentiary 1860 Ambassadors
Website	British Embassy - Moscow

The ambassador of the United Kingdom to Russia (Russian: Британский Посол в России) is the United Kingdom's foremost diplomatic representative in the Russian Federation and head of the UK's diplomatic mission in Russia. The official title is His Britannic Majesty's Ambassador to the Russian Federation.

Between 1844 and 1860 the status of the head of mission in Saint Petersburg was reduced from Ambassador to Envoy Extraordinary and Plenipotentiary. The capital of Russia, and later of the Soviet Union (from 1922 to 1991), moved to Moscow in 1918.