Look up Isan in Wiktionary, the free dictionary.
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