Italians in the United Kingdom, also known as Italian Brits are citizens and/or residents of the United Kingdom who are fully or partially of Italian descent, whose ancestors were Italians who emigrated to the United Kingdom during the Italian diaspora. The phrase may refer to someone born in the United Kingdom of Italian descent, someone who has emigrated from Italy to the United Kingdom, or someone born elsewhere, who is of Italian descent and has migrated to the UK. More specific terms used to describe Italians in the United Kingdom include: Italian English, Italian Scots, and Italian Welsh.

Genoese Gibraltarians have existed in Gibraltar since the 16th century and later became an important part of the population. It is an ethnic community made up of descendants of Genoese and Ligurians who emigrated to Gibraltar during the Italian diaspora. The population of Gibraltar with Genoese surnames is around 20% of the total.