| Immunology and Cell Biology | Academic & Science |
| Infrastructure Capacity for Biology | Academic & Science |
| Ithaca College Broadcasting | Academic & Science |
| Information Collection Budget | Academic & Science |
| Integrative and Comparative Biology | Academic & Science |
| Internet Client Bank | Banking |
| Investment Corporation of Bangladesh | Banking |
| Institute of Certified Bankers | Banking |
| International City Bank | Banking |
| Insurance Capture Buffer | Business |
| Imaging Communications Business | Business |
| International Competitive Bidding | Business |
| International Certification Bureau | Business |
| Icb Fin | Business |
| Institute of Certified Bookkeepers | Certifications |
| Inclusive Community Building | Community |
| Informal Conference Board | Community |
| International Citizens Band | Community |
| Integrated Conference Bridge | Community |
| Information Control Board | Computing |
| Interstate Computer Bank | Computing |
| Inner Company Billing | Computing |
| Integrated Cluster Bus | Computing |
| Instrument Communication Bus Interface | Computing |
| Instrument Control Bus | Computing |
| Incoming Call Bearer | Computing |
| Internal Channel Bus | Computing |
| Image Capture Board | Computing |
| Interchange Control Bit | Computing |
| Intel Cloud Builder | Computing |
| Inter Chassis Backup | Computing |
| Inner Core Boundary | Earth Science |
| Islamabad College for Boys | Educational Institute |
| International College of Broadcasting | Educational Institute |
| Targa Bitmap Graphics File | File Type |
| Interagency Coordinating Board | General |
| International Crisis Behavior | General |
| Island Craft Bulletin | General |
| Infantry Combat Boot | General |
| International Concept Brand | General |
| IPMA Competence Baseline | General |
| Individual Competence Baseline | General |
| Interdisciplinaire Carnot de Bourgogne | General |
| Inventions and Contributions Board | General |
| Infantry Combat Boots | General |
| Intercity Bus | General |
| Imminent Collision Braking | General |
| I Care Because | General |
| Item Category Based | General |
| International Congress of Biometeorology | General |
| Individual Case Basis | Governmental |
| In Cold Blood | Governmental |
| Interim Certification Board | Governmental |
| Institute for Collaborative Biotechnologies | Governmental |
| Institute for Computational Biomedicine | Governmental |
| International Church of Barcelona | International |
| International Conference on Biometrics | International |
| International Christian Brotherhood | International |
| International Certification Board | International |
| International College Beijing | International |
| International Conference Banqueting | International |
| International Compensation and Benefits | International |
| Inventory Cleaner Bet | Internet |
| Internet Citizens Band | Internet |
| Internet Connection Benchmark | Internet |
| Integrated Commissioning Board | Medical |
| intracavitary brachytherapy | Medical |
| intracoronary brachytherapy | Medical |
| intracranial bleeding | Medical |
| Intercontinental Correspondence Band | Radio Science |
| International Canadian Blends | Regional |
| Invalid Character Bug | Softwares |
| Interim Change Bulletin | Space Science |
| Interrupt Control Block | Space Science |
| Industry Classification Benchmark | Stock Exchange |