Instant Response Information System
Ilinois Research Information Service
Industrial Relations Information Service
Information, Robotics and Intelligent Systems
Inorganic Rings International Symposium
Integrated Reconnaissance Intelligence System
Interactive Radar Information System
Interactive Remote Instructional System
INDUSTRIAL RISK INSURERS
Institut de Ressources en Intervention Sociale
Institute of Research on Information Systems
Institute on Rehabilitation Issues
Instituto de Reabilitação e Integração Social
Instruções Reguladoras das Inspeções de Saúde
Integrated Radar Inspection System
Integrated Reconfigurable Intelligent Systems
Integrated Rutgers Information System
Interface Réseau Information Service
International Research Initiatives Scheme