| High Road Marketing and Communications | |
| High Sierra Networks, Inc. | Nevada |
| High Speed Web Services, LLC | Delaware |
| High Street Capital | Illinois |
| High Tech High Touch Solutions, Inc. | Washington |
| High Tech Innovations, LLC | New Jersey |
| High Tech Tronics, Inc. | Oklahoma |
| High Technology, Inc. | Massachusetts |
| High Tide Solutions, LLC | United States Virgin Islands |
| High Touch Technologies | Texas |
| High Voltage Computer Repair Service | Illinois |
| High Voltage Software | Illinois |
| High-Speed Solutions | New Jersey |
| Highbridge Capital Management | |
| HighByte, Inc. | Maine |
| HIghDesert Technology | Nevada |
| Highdive, Inc. | California |
| Highen Fintech Labs | |
| Higher Dimensions Internet Group | Arizona |
| Higher Edge Software, LLC | |
| Higher Learning Commission | |
| Higher Logic, LLC | Virginia |
| Higher Orbits | Colorado |
| Higher SEO | |
| HigherEdJobs | Pennsylvania |
| HigherEducation | South Carolina |
| HigherVisibility | Tennessee |
| HighField Biopharmaceuticals, Inc. | |
| Highfive | California |
| HighFlyers | |
| HighGear, Inc. | |
| Highland | |
| Highland Capital Partners | California |
| Highland Federal | |
| Highland Ridge Capital | |
| Highland Software, Inc. | Georgia |
| Highland Solutions | Illinois |
| Highland Technologies Corporation | Utah |
| Highland Technology, Inc. | California |
| Highland Wireless Services, LLC | Florida |
| Highlander Accelerator | Nebraska |
| Highlander Partners | Texas |
| HighLevel, Inc. | Texas |
| Highlight.io | |
| Highline College | Washington |
| Highline Internet | Texas |
| Highline Solutions | |
| Highline Technologies, Inc. | |
| Highly Succeed, Inc. | |
| HighMatch | Georgia |