| Imperial Software Systems | New York |
| Imperial Tax & Accounting, Inc. | |
| Imperial Valley College | California |
| Imperial Web Solutions | Florida |
| Imperium Marketing Solutions | |
| Imperva | California |
| IMPERX, Inc. | Florida |
| Impiger Technologies | Texas |
| Impiger Technologies, Inc. | Texas |
| Impilo, Inc. | |
| Impinj, Inc. | Washington |
| IMPLAN | North Carolina |
| Implementation Specialists | Minnesota |
| Implex, Inc. | Minnesota |
| Implicit Success Marketing & Web Design | |
| Implicit, Inc. | California |
| Imply Data, Inc. | California |
| Import.io | California |
| Importynt AI Digital Agency | Indiana |
| Impossible Things | |
| Impower Marketing | |
| Impowersoft | Texas |
| IMPRES Technology Solutions, Inc. | California |
| Impressca | |
| Impression Technology | California |
| Impression, LLC | |
| Impressions Design + Marketing | Oregon |
| Impresst Business Services, Inc. | Maryland |
| IMPRINT | |
| Imprint Enterprises | Illinois |
| ImprintNext | California |
| Imprivata, Inc. | Massachusetts |
| Imprografix, LLC | |
| Improvado, Inc. | California |
| Improve & Grow, LLC | Pennsylvania |
| Improved Pharma | |
| Improveit360 | Ohio |
| Improving | Texas |
| Improz Marketing | |
| Impulse Advanced Communications | California |
| Impulse Dynamics | New Jersey |
| Impulse Space | |
| Impulsify | Colorado |
| ImQuest BioSciences | Maryland |
| IMRE | New York |
| Imricor | Minnesota |
| IMRIS | Minnesota |
| IMRON Corporation | California |
| IMS Consulting | Virginia |
| IMS Corporate | Florida |