| ICS Voice and Data | New Jersey |
| ICSA Labs | Pennsylvania |
| iCST | Maine |
| ICSynergy International, L.P. | Texas |
| ICT Design Studio, LLC | |
| ICT University | Louisiana |
| ICTC USA | Florida |
| Ictect, Inc. | Wisconsin |
| Ictero Medical, Inc. | |
| ICTworks | California |
| ICU Medical | California |
| icu software | Minnesota |
| iCUBE Systems | Virginia |
| ICVM Hawk | |
| ICWUSA.com, Inc. | Oregon |
| ICX Consulting | |
| ICY DOCK USA | California |
| iCyte | Michigan |
| ID Card Group | Oregon |
| ID DataWeb | Virginia |
| ID Edge, Inc. | Colorado |
| ID Genomics, Inc. | Washington |
| ID Integration, Inc. | Washington |
| ID International | |
| ID Label, Inc. | Illinois |
| ID Resolution, LLC | New Jersey |
| ID Superstore | Washington |
| iD Tech | California |
| ID Tolu | Florida |
| ID True | |
| iD Ventures America, LLC | California |
| ID Watchdog | Colorado |
| ID Web and Print, LLC | Georgia |
| ID4Pharma, LLC | |
| ID90 Travel, Inc. | Texas |
| Ida Corporation | North Dakota |
| Idaho Advanced Energy Consortium | |
| Idaho Business Technology | Idaho |
| Idaho Digital Learning Alliance | Idaho |
| Idaho National Laboratory | Idaho |
| Idaho Small Business Development Center | |
| Idaho State University Computer Science | Idaho |
| Idaho State University Mathematics and Statistics | Idaho |
| Idaho Technology Council | Idaho |
| Idaho Webpages | Idaho |
| iDashboards | Michigan |
| IDATAFY | Arkansas |
| iDatalytics, LLC | Kansas |
| idaWebhost.com | Idaho |
| IDBiologics | Tennessee |