| Hamilton Technical Services | South Carolina |
| Hamilton.net, Inc. | Nebraska |
| Hamilton/ITS, Inc. | Georgia |
| Hamiltonarts | Arizona |
| Hamline University Applied Mathematics Major | Minnesota |
| Hamline University Computational Data Science Major | Minnesota |
| Hammatsu Pharma Research, Inc. | |
| Hammer | Massachusetts |
| Hammer Corporation | |
| Hammerman Associates, Inc. | Maryland |
| Hammers Company | |
| Hammerspace | California |
| HammerTech | Illinois |
| Hamming AI | |
| HammockWeb | |
| Hammond Communications Group, Inc. | |
| Hammondsport Mac Users Group | New York |
| HAMMOQ | Arizona |
| Hampden-Sydney College | Virginia |
| Hampshire College | Massachusetts |
| Hampton Creative | |
| Hampton Telecommunications Specialists | New Jersey |
| Hampton University | Virginia |
| Hamptons Web Design | New York |
| Hamrick Software | Arizona |
| Hanaco Manufacturing Company | California |
| HanaHaus | |
| Hancock Whitney | Louisiana |
| HANCOM, Inc. | |
| Hand Biomechanics Lab, Inc. | |
| Hand-In-Scan | |
| Handa Pharma, Inc. | |
| Handbid App | Colorado |
| Handel Information Technologies | Wyoming |
| Handheld Systems, Inc. | Oregon |
| Handle, Inc. | |
| Handmade Designs, LLC | Idaho |
| Hands on Technology Transfer, Inc. | Massachusetts |
| Hands On Web | Texas |
| HANDS-ON Consultations, LLC | California |
| HandsDown Software | Oklahoma |
| Handshake | California |
| HandsomeWeb, LLC | Texas |
| Handwrytten | |
| Handy Backup | Texas |
| Handy Recovery | Georgia |
| HandyGraph | Oregon |
| Hane Chow, Inc. | California |
| Haneke Design | Florida |
| Hang Ten SEO | |