Jiseul (Korean: 지슬) is a 2012 South Korean war drama film written and directed by Jeju Island native O Muel. The film is shot in black and white with the entire cast composed of local actors speaking their natural dialect. "Jiseul" means "potato" in Jeju dialect. O said he picked it as the title of his film because "potatoes are considered a staple food in many countries, often symbolizing survival and hope." Set during the Jeju Uprising on the island in 1948, O said the film does not focus on the large-scale struggle, but on a forgotten true story about a group of villagers who hid in a cave for 60 days to escape from a military attack. They hid underground for months, cold and numb, far too close for comfort—just like the potatoes to which the title refers.

Jeju, often called Jejueo or Jejuan in English-language scholarship, is a Koreanic language originally from Jeju Island, South Korea. It is not mutually intelligible with mainland Korean dialects. While it was historically considered a divergent Jeju dialect of the Korean language, it is increasingly referred to as a separate language in its own right. It is declining in usage, and was classified by UNESCO in 2010 as critically endangered, the highest level of language endangerment possible. Revitalization efforts are ongoing.