| IntraStage, Inc. | California |
| IntraSystems, LLC | Massachusetts |
| Intratus | California |
| inTRAvent Medical | |
| Intrax Global Internships | |
| Intrepid | |
| Intrepid Control Systems, Inc. | Michigan |
| Intrepid Data, LLC | Illinois |
| Intrepid Labs | |
| Intrepid Technology, Inc. | California |
| Intrex, Inc. | North Carolina |
| Intricate Web | Rhode Island |
| INTRIDEA, Inc. | |
| Intrigo Systems, Inc. | California |
| Intrinio, Inc. | Florida |
| Intrinium | Washington |
| Intrinsic | |
| Intrinsic Development Corporation | Virginia |
| Intrinsic LifeSciences | California |
| Intrinsic Media | |
| Intrinsic Medicine | Washington |
| Intrinsic PC Tech | New Jersey |
| Intrinsic Quality, Inc. | Illinois |
| Intrinsic Venture Capital, Inc. | |
| Intrinsix Corporation | Massachusetts |
| Introduction to Theoretical Computer Science | |
| introNetworks, Inc. | California |
| Intronics Power, Inc. | Massachusetts |
| Intronix Test Instruments, Inc. | Arizona |
| IntroWizard | Oregon |
| Introworks, Inc. | Minnesota |
| Intruno, Inc. | Texas |
| Intrusion, Inc. | Texas |
| Intrust IT | Ohio |
| Intryc | |
| Intsights | New York |
| Intuicom, Inc. | Colorado |
| Intuit, Inc. | California |
| IntuiTap Medical, Inc. | Illinois |
| Intuitia Agency | |
| Intuition Consultancies, Inc. | |
| Intuition Machines, Inc. | |
| Intuitive Biosciences | Wisconsin |
| Intuitive Circuits, LLC | Michigan |
| Intuitive Machines, LLC | Texas |
| Intuitive Research and Technology Corporation | Alabama |
| Intuitive Surgical | California |
| Intuitive Venture Partners, LLC | |
| IntuitiveMedia, LLC | North Carolina |
| IntuitiveX | Washington |