Koh-Lanta is a French reality game show based on the popular international Survivor format. The series premiered on August 4, 2001. The show is broadcast on TF1 and there have been 22 regular seasons and 7 special seasons. The show has been hosted by Denis Brogniart since the second season. The title of the show Thai "Ko Lanta" (roughly translated as "the island of a million eyes") - not only is this a reference to the televised nature of the competition (with millions of viewers watching the show) but the title is also the name of filming location of the first season (Ko Lanta Yai, Thailand).

Following the basic premise of other international versions of the Survivor format, it features a group of contestants who are marooned in an isolated location, where they must provide food, water, fire, and shelter for themselves. The contestants compete in challenges for rewards and immunity from elimination. The contestants are progressively eliminated from the game as they are voted out by their fellow contestants until only one remains and is declared the winner and awarded the grand prize of €100,000.

Since its debut in 2001, Koh-Lanta has been a huge success in France, regularly finishing first in its timeslot.