Survivor (also known as Survivor UK outside of the UK) is a British adventure reality game show based on the international Survivor format. Following the premise of other versions of the Survivor format, the show features a group of contestants, referred to as "castaways" as they are marooned in an isolated location. The castaways must provide food, water, fire, and shelter for themselves. The contestants compete in various challenges for rewards and immunity from elimination. The contestants are progressively eliminated from the game as they are voted off the island by their fellow castaways. The final castaway remaining is awarded the title of "Ultimate Survivor" and a large monetary prize.

The series aired for two seasons on the ITV network in 2001 and 2002, but the series was considered a ratings failure despite the programme having a higher viewership than other reality series at the time, including Big Brother. ITV cancelled Survivor after two seasons because it had failed to garner a loyal viewership. The network admitted fault for not supporting the series enough in its launch phase, highlighting the key issue with their approach to the scheduling of the series.

In September 2022, a revival of the series was announced by the BBC to be broadcast in 2023 on BBC One and BBC iPlayer.