Look up Britain in Wiktionary, the free dictionary.
Britain most often refers to:
- The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands
- Great Britain, a large island comprising the countries of England, Scotland and Wales
- The realm of the Monarchy of the United Kingdom, comprising the United Kingdom, the Crown Dependencies, and British Overseas Territories.
Britain may also refer to: