| Jack Rugile | Colorado |
| Jackalope Technologies, Inc. | Washington |
| Jackbox Games | Illinois |
| JackDB, Inc. | |
| Jackpine Technologies Corporation | Massachusetts |
| Jackpocket, LLC | |
| Jackpot Digital, Inc. | |
| Jackrabbit | Texas |
| Jackrabbit Design | Massachusetts |
| Jackrabbit Technologies | North Carolina |
| Jackson and Tull | District of Columbia |
| Jackson College | Michigan |
| Jackson Communications, Inc. | Mississippi |
| Jackson D. Carson | Colorado |
| Jackson Digital | |
| Jackson Fish Market | |
| Jackson Hole AV | Wyoming |
| Jackson Hole Compunet | Wyoming |
| Jackson ImmunoResearch, Inc. | Pennsylvania |
| Jackson Key and Associates, LLC | Alabama |
| Jackson Laboratory | |
| Jackson River | |
| Jackson Square Ventures | |
| Jackson State University Department of Electrical & Computer Engineering and Computer Science | Mississippi |
| Jackson Technical, LLC | Oklahoma |
| Jackson Thornton Technologies, LLC | Alabama |
| Jacksonville College | Texas |
| Jacksonville State University | Florida |
| Jacksonville University | Florida |
| Jacksonville Website Design | Florida |
| Jacob Eugene Lara | |
| Jacob Tyler Brand & Digital Agency | California |
| Jacobi Robotics, Inc. | |
| Jacobi, Inc. | California |
| Jacobs Pineda, Inc. | California |
| Jacobs Solutions, Inc. | |
| JacqCAD International | New Hampshire |
| Jacquinot Consulting, Inc. | Georgia |
| Jada Management Systems, LLC | Oregon |
| Jadak | New York |
| JADBio | California |
| Jade | |
| Jade Global | |
| JADE International | Wisconsin |
| Jade Orchard | |
| Jade Software Corporation Ltd | Georgia |
| JadeBio, Inc. | California |
| Jadi Communications, Inc. | |
| Jadin Tech, LLC | Alaska |
| Jaeb Center for Health Research | |