| Iomedia | New York |
| Iomedia Group | Kansas |
| Iomico | |
| ION | New York |
| Ion Computer Systems, Inc. | New York |
| ION Corporation | |
| Ion District | |
| ION Geophysical Corporation | Texas |
| Ion Interactive, LLC | |
| Ion Learning | California |
| ION247 | Florida |
| Iona College Computer Science Department | New York |
| Iona Tech | Colorado |
| ionadas local, LLC | Texas |
| Ionblox, Inc. | California |
| iOncologi, Inc. | |
| iOne Solutions, LLC | |
| IONETIX Corporation | Michigan |
| Ionia | Arizona |
| Ionic | Wisconsin |
| Ionic Framework | |
| Ionic Pharmaceuticals, LLC | |
| Ionic Security, Inc. | |
| IonIdea, Inc. | Virginia |
| IONIQ Sciences, Inc. | Utah |
| Ionis Pharmaceuticals, Inc. | |
| IONIX, Inc. | |
| Ionixx Technologies | |
| Ionpath, Inc. | California |
| IonQ, Inc. | Maryland |
| IonQ, Inc. | |
| Ionzero | Colorado |
| IOOGO, Inc. | Texas |
| Iopex Technologies | California |
| IOpipe | Washington |
| iOrbit Digital Technologies, LLC | |
| iOrganBio, Inc. | |
| ioSafe | Washington |
| IoT Evolution World | Connecticut |
| IOT Systems, LLC | Maryland |
| IOT Web Lab, LLC | |
| IoT World Today | California |
| iot.do | Florida |
| IoT/AI, Inc. | California |
| iota Biosciences | California |
| IOTA Software, Inc. | |
| iotaMotion, Inc. | |
| IOTAP | Virginia |
| IoTecha | New Jersey |
| IOTEKCORP | |