Thomas Cook Group plc was a British global travel group which was listed on the London Stock Exchange from its formation on 19 June 2007 by the merger of Thomas Cook AG (itself the successor to Thomas Cook & Son) and MyTravel Group until 23 September 2019 when it went into compulsory liquidation. The group operated as a tour operator and airline, in addition it also operated travel agencies in Europe. At the time of the group’s collapse, approximately 21,000 worldwide employees were left without jobs (including 9,000 UK staff) and 600,000 customers (150,000 from the UK) were left abroad, triggering the UK’s largest peacetime repatriation.

After the collapse, segments of the company were purchased by others, including the travel stores in the UK, the airlines, the Thomas Cook name and logo, the hotel brands and the tour operators. Thomas Cook India was not affected, as Thomas Cook India is an entirely different entity since August 2012 when it was acquired by Fairfax Financial. In September 2020, Fosun International launched Thomas Cook Holidays as the successor to the company, hiring former Thomas Cook Group staff in the process.