TUI Travel PLC was a British leisure travel group headquartered in Crawley, West Sussex. The company was formed on 3 September 2007 by the merger of First Choice Holidays PLC and the Tourism Division of TUI AG, which owned 56.4% of it. The company operated in 180 countries and claimed 30 million customers.

TUI Group is a German leisure, travel and tourism company; it is the largest such company in the world. TUI is an acronym for Touristik Union International. TUI AG was known as Preussag AG until 1997 when the company changed its activities from mining to tourism. It is headquartered in Hanover, Germany.