| International Communications Products, Inc. | Florida |
| International Components Corporation | New York |
| International Computer Associates, Inc. | Maryland |
| International Computer Concepts, Inc. | Illinois |
| International Computer Science Institute | California |
| International Conference On Computer-Aided Design | California |
| International Conference on Software Engineering | Washington |
| International Council on Systems Engineering | |
| International Data Center Authority | Maryland |
| International Data Group, Inc. | |
| International Data Systems | Alaska |
| International DataBases, LLC | New Jersey |
| International DB2 User Community | Illinois |
| International Digital Media and Arts Association | Indiana |
| International Direct Selling Technology Corporation | Florida |
| International Economic Development Council | |
| International Electronic Machines Corporation | New York |
| International Electronics, Inc. | Illinois |
| International Enterprise Services, Inc. | |
| International Foundation of Robotics Research | California |
| International Function Point Users Group | New Jersey |
| International Game Developers Association | California |
| International HealthCare | |
| International Institute for Software Testing | Minnesota |
| International Intellectual Group, Inc. | New York |
| International Internet Consultants | New York |
| International IT Jobs | California |
| International Journal of Mathematics and Computer Science | |
| International Manufacturing Services, Inc. | Rhode Island |
| International Manufacturing Technology Show | Illinois |
| International Marketing Systems | |
| International Medical Industries, Inc. | Florida |
| International Merchant Services | Texas |
| International Micro Systems, Inc. | Pennsylvania |
| International Monetary Fund | |
| International Multilingual Users Group | California |
| International Network for Social Network Analysis | |
| International Office Technologies | Minnesota |
| International OnLine, Inc. | West Virginia |
| International Plus | California |
| International Presence | Florida |
| International Process Solutions, Inc. | California |
| International Products, Inc. | New Mexico |
| International Robotics, Inc. | Connecticut |
| International Satellite Services, Inc. | Florida |
| International Society for Advancement of Cytometry | |
| International Society for Bayesian Analysis | North Carolina |
| International Society for Computational Biology | Maryland |
| International Society for Knowledge Organization | |
| International Society for Stem Cell Research | |