| Long Beach SEO Guy | |
| Long Business Systems, Inc. | Ohio |
| Long Distance Post/Belmont Telecom, Inc. | Massachusetts |
| Long Grove Pharmaceuticals, LLC | |
| Long Island Data Solutions | New York |
| Long Island High Technology Incubator | New York |
| Long Island Internet Headquarters | New York |
| Long Island Macintosh Users Group | New York |
| Long Island Media, Inc. | New York |
| Long Island SEO | |
| Long Island University | New York |
| Long Journey | |
| Long Lines Broadband | Iowa |
| Long Play, Inc. | |
| Long Point Digital | |
| Long Weekend | |
| Long's Graphic Design, Inc. | |
| Long-Term Stock Exchange, Inc. | |
| Long2 Consulting | Illinois |
| Longboat Mobility | Washington |
| Longbow Strategic Group, Inc. | |
| Longeveron | Florida |
| Longeviti Neuro Solutions | |
| Longevity Biomedical, Inc. | Washington |
| Longevity Biotech | Pennsylvania |
| Longevity Vision Fund | New York |
| Longhorn Hosting | Texas |
| Longhorn Vaccines and Diagnostics, LLC | Maryland |
| Longitude Capital | California |
| LongJump Ventures | Illinois |
| Longmont Computer, Inc. | Colorado |
| LongShot AI, Inc. | |
| Longterm Solutions | Tennessee |
| Longwell Company | California |
| Longwood Fund | |
| Longwood University | Virginia |
| Longworth Venture Partners | Massachusetts |
| Lonstern, LLC | |
| Loodon, LLC | |
| Look North, Inc. | |
| Look North, Inc. | |
| Look to the Right, LLC | North Carolina |
| Look.Net, L.C. | Virginia |
| Lookback | California |
| Looker Data Sciences, Inc. | California |
| LookFar | |
| Looking for Group, LLC | |
| Looking Glass | |
| Looking Glass Virtual Reality Services, Inc. | North Carolina |
| LookingGlass Cyber Solutions, Inc. | Virginia |