The visa policy of the United Kingdom is the policy by which His Majesty's Government determines visa requirements for visitors to the United Kingdom, and the Crown dependencies of Guernsey, Jersey, and the Isle of Man and those seeking to work, study or reside there.

The Crown Dependencies are three offshore island territories in the British Islands that are self-governing possessions of the British Crown: the Bailiwick of Guernsey and the Bailiwick of Jersey, both located in the English Channel and together known as the Channel Islands, and the Isle of Man in the Irish Sea between Great Britain and Ireland.