ISL
ISL stands for:
- French-German Research Institute of Saint -Louis ( Institut franco- allemand de recherches de Saint- Louis, French name ), a military research center, which is operated in German - French cooperation
- Eagle Air, former Icelandic airline ( ICAO code )
- Institute of Shipping Economics and Logistics
- International Sign Language, also known under the name Gestuno plan language
- ISO 3166 and Olympic country code for Iceland
- Inter-Switch Link Protocol, a proprietary protocol from Cisco, which finds application in VLAN
- International socialist left
- International Sport and Leisure (ISL ), an international group
- Advocacy Independent Living Association in Germany
- Disambiguation
- Abbreviation