| Istituto Centrale per il Restauro | Academic & Science |
| Intercollegiate Center in Rome | Academic & Science |
| Institut catholique de Rennes | Academic & Science |
| Institute for Comparative Research in Human and Social Sciences | Academic & Science |
| Instant Centre of Rotation | Academic & Science |
| Lithium Cobalt Rechargeable Li-Ion Cell | Academic & Science |
| Indirect Cost Recovery | Accounts and Finance |
| International Credit Repair | Accounts and Finance |
| Nicaro | Airport Code |
| Institute for Cultural Research | Associations & Organizations |
| Industrial Cases Reports | Associations & Organizations |
| International Care & Relief | Associations & Organizations |
| Interest Coverage Ratio | Business |
| International Communications Research | Business |
| Investor Confidence Rating | Business |
| Inanimate Carbon Rod | Chemistry |
| I Can Read | Community |
| International Radar Conference | Community |
| Institute of Clinical Research | Community |
| International Conference on Romanticism | Community |
| Ipswich Community Radio | Community |
| Integrated Conservation | Community |
| Integrated Conservation Resources | Community |
| Institute For Creation Research | Community |
| Islamic Center of Rochester | Community |
| Interrupt Control Register | Computer Assembly Language |
| Incremental Related Carrier | Computing |
| Internet Connection Records | Computing |
| Internet Crime Report | Computing |
| Intelligent Call Router | Computing |
| Input Control Register | Computing |
| Independent Computer Retailers | Computing |
| Initial Cell Rate | Computing |
| Intel Cluster Ready | Computing |
| Intelligent Character Recognition | Electronics |
| Bitmap Graphics (ncsa Telnet Interactive Color Raster Graphic File) | File Type |
| Information Collection Request | General |
| Inner Contact Rubber | General |
| I Can Relate | General |
| Industrial Control Repair | General |
| Integrated Corporate Relations | General |
| Information Change Rate | General |
| International Congress of Refrigeration | General |
| Idiopathic Condylar Resorption | General |
| Issuer Credit Rating | General |
| Indiana Construction Roundtable | General |
| Integrated Circuit Records | General |
| Coach Register | General |
| itial Cell Rate | General |
| Intelligent Call Routing | General |
| Integrated Cost Reduction | General |
| Infrared Cut Removable | General |
| I Can’t Resist | General |
| Information Collection Review | General |
| Indirect Cost Rate | General |
| ID Code Readers | General |
| Incurred Claim Ratio | General |
| In Class Resource | General |
| Instantaneous Centre of Rotation | General |
| Income Contingent Repayment | Governmental |
| Investigate, Capture, and Recommend | Governmental |
| Information Collection Rule | Governmental |
| Institutul Cultural Român | Governmental |
| International Civilian Representative | Governmental |
| Institute of Cetacean Research | Governmental |
| International Council of Reflexologists | Governmental |
| Institute for Communication Research | Governmental |
| Institute for Centrifugal Research | Governmental |
| Institute of Communications Research | Governmental |
| Institute for Conservation Research | Governmental |
| I Can't Remember | Internet |
| Imprinting Control Region | Medical |
| Institute of Cancer Research | Medical |
| Immunologic Constant of Rejection | Medical |
| Ion Channel Receptor | Medical |
| Introduction to Clinical Reasoning | Medical |
| International Congress Of Radiology | Medical |
| Insert, Controlled Release | Medical |
| The Institute For Cancer Research | Medical |
| Intensive Cardiac Rehabilitation | Medical |
| Interventional Cardiology Review | Medical |
| Intelligence Collection Requirements | Military and Defence |
| Intelligence Collection Requirement | Military and Defence |
| Intelligence Collection Request | Military and Defence |
| Inishowen Community Radio | News & Entertainment |
| Ion Cyclotron Resonance | Physics Related |
| Instantaneous Center of Rotation | Physics Related |
| Islander Creole English | Regional |
| Image Character Recognition | Softwares |
| Instruction Change Request | Space Science |
| Interface Compatibility Record | Space Science |
| InterColonial Railway | Transport & Travel |
| Nicaro Airport | Transport & Travel |