Isan is a region of Thailand. Isan or ISAN may also refer to: Isan (band), a British electronic music group Isan (town), a town in Thailand Isan people, an ethno-regional group of people native to Northeastern Thailand Isan language, the collective name for the dialects of the Lao language as they are spoken in Thailand Isan, a dialect of the Yopno language of Papua New Guinea Institute for Spectroscopy Russian Academy of Sciences InStore Audio Network, a supplier of background music for supermarkets and drugstores International Society for Autonomic Neuroscience International Standard Audiovisual Number, a unique identifier for audiovisual works People Saint Isan, 6th-century saint of South Wales Isan Díaz (born 1996), Puerto Rican baseball player Isan Reiyu, the Japanese name of Zen Master Guishan Lingyou (771-853) Isan Reynaldo Ortiz Suárez (born 1985), Cuban chess grandmaster See also Isani (Tbilisi Metro), a metro station in Tbilisi, Georgia Isa (disambiguation), of which Isan may be an adjective form Esan (disambiguation) of Nigeria, which can refer to the region, people, and language