English abbreviations from is to isas
- IS (Information System)
- Is. (Idus ("Ides"))
- IS3 (In-transit Security and Survivability System)
- ISA (International Standard Atmosphere)
- ISAAA (International Service for the Acquisition of Agri-biotech Applications)
- ISAC (International Schools Athletic Conference)
- ISAF (International Sailing Federation)
- ISAM (Indexed Sequential Access Method)
- ISAP (Individual System Automation Plan)
- ISAPI (Internet Server Application Programming Interface)
- ISAR (Inverse SAR (Synthetic Aperture Radar))
- ISAS ((organization) Institute of Space and Astronautical Science)