| International Directory of Marine Scientists | Academic & Science |
| Industrial Diesel Manufacturing and Service | Business |
| International Data Management Systems, Inc. | Business |
| Integrated Distribution Management System | Business |
| IGATE Data Management Services | Business |
| Import and Dealer Management System | Business |
| Inspection Data Management System | Business |
| Integrated Data Management Services | Business |
| Independent Dealer Management System | Business |
| Integrated Digital Marketing Solutions | Business |
| Integrity Data Management System | Business |
| Integrated Document Management System | Business |
| Imaging and Document Management System | Business |
| Investigations Data Management System | Business |
| Isotope Dilution Mass Spectrometry | Chemistry |
| Ireland Drive Middle School | Community |
| Instructional Data Management System | Community |
| Intrusion Detection Mitigation System | Computing |
| Interactive Digital Media Supercomputing | Computing |
| Intrusion Detection Management Service | Computing |
| Intrusion Detection and Monitoring Systems | Computing |
| Intel Data Migration Software | Computing |
| Interactive Distributed Multimedia System | Computing |
| Integrated Database Management System | Database Management |
| Iowa Donkey and Mule Society | General |
| Intelligent Data Movement Service | General |
| Integrated Dealer Management System | General |
| Infiniti Drive Mode Selector | General |
| Immune Discovery Modeling Service | General |
| Instructional Design and Multimedia Services | General |
| Isotope Dilution Mass Spectrum | General |
| Integriertes Dokumenten Management System | International |
| Irish Downhill Mountainbike Series | Regional |
| Integrated Debt Management System | Softwares |
