Incident Command System 
Institute of Commonwealth Studies 
Integrated Circuits 
Implementation Conformance Statement 
Internet Connection Sharing 
Integrated Communications Systems 
Integrated Communications System 
Intelligence Community Staff 
identification codes 
Initial Control System 
Integrated Chassis System 
Integrated Communication Systems 
intercostal space 
Incident Command Structure 
Information Control System 
Institutes and Centers 
Instrument Control System 
Integrated Collection System 
Interim Contractor Support 
Internal Countermeasure Set 
International Chamber of Shipping 
International Classification for Stand… 
International Continence Society 
Interphone Control Station 
Interpretive Computer Simulator 
Interrupt Control Stack 
immunochromatographic strip 
Implementation Conventions 
Incident Command Systems 
Incoming Call Screening