| HT Global Circuits | Florida |
| HT Micro | New Mexico |
| HTC Global Services | Michigan |
| HTD | New York |
| HTD Biosystems, Inc. | California |
| HTE | California |
| HTEC Group, Inc. | California |
| HTG Molecular Diagnostics, Inc. | Arizona |
| HTML Pro | |
| HTML Writers Guild | California |
| HTML5 Canvas Tutorial | Texas |
| HTML5 Games | Florida |
| HTMl5 Mania | California |
| HTML5 UP | Tennessee |
| HTML5.org | California |
| HTML5Games | California |
| HTMLcut.com | Pennsylvania |
| HTMLfx | Nevada |
| HTMLGoodies | Connecticut |
| HTMLPanda | |
| HTP Company | California |
| Htronic Web Design | Florida |
| HTS Computers, Inc. | Florida |
| HTTPie, Inc. | California |
| HTX Labs | Texas |
| HTX Sports Tech | Texas |
| HTX Talent | Texas |
| HUB International Ltd | |
| Hub8, LLC | |
| Hubbard Brook Ecosystem Study | |
| Hubbard Digital, LLC | |
| HubBase, Inc. | |
| Hubble Therapeutics | |
| Hubbs-SeaWorld Research Institute | |
| Hubcase, LLC | California |
| HubEngage, Inc. | |
| Huber & Associates | Missouri |
| Huberific Graphic Design Studio, LLC | |
| Hubgets, Inc. | Delaware |
| Hubilo | California |
| Hubly Surgical | Illinois |
| HubNetic | Missouri |
| HUBServ | Mississippi |
| HubSpire Corporation | |
| HubSpot, Inc. | Massachusetts |
| Hubspring Health | Florida |
| Hubstaff | Indiana |
| Hubstream, Inc. | Washington |
| HUBUC, Inc. | |
| Hubwise Technology | Nebraska |