| Wider Wake | New York |
| Widevine Technologies | Washington |
| Widomaker Communication Services, Inc. | Virginia |
| Widow's Peak Web Design | California |
| Widsix | Arizona |
| WIECK | Texas |
| Wield Therapeutics, Inc. | |
| WIF AX, LLC | Arizona |
| WIFI | Virginia |
| WiFiMap, LLC | New York |
| WiGen, LLC | |
| Wiggle art web design | California |
| Wiideman Consulting Group, Inc. | California |
| Wiilcom | Illinois |
| Wikibooks | |
| WiKID Systems, Inc. | Georgia |
| Wikimedia Foundation, Inc. | California |
| Wikinews | |
| WikiRealty, Inc. | California |
| WikiRealty, Inc. | |
| Wikivoyage | |
| Wiland, Inc. | |
| Wilberforce University | Ohio |
| Wilbur Development | |
| Wilco Electronics, Inc. | Pennsylvania |
| Wilcox Digital Marketing | |
| Wild Biotech | |
| Wild Capture, Inc. | California |
| Wild Crow Communications, Inc. | |
| Wild Ginger Software, Inc. | Alabama |
| Wild Goose Enterprises, Inc. | |
| Wild Moose | |
| Wild Web West, LLC | Idaho |
| Wild Web Works | Oregon |
| Wild West Domains | Arizona |
| Wild-Webs, Inc. | Kansas |
| Wildbit, LLC | Pennsylvania |
| Wildcard, LLC | |
| Wildcat Electronics, Inc. | South Carolina |
| Wildcat Software Design & Services | Florida |
| Wildcat Ventures | California |
| Wilder Strategies, LLC | |
| Wilder2 Corporation | |
| Wilderness Agency | |
| Wilderness Medical Society | |
| Wildfire Internet Services | Illinois |
| WildFly | North Carolina |
| Wildman Web Solutions, LLC | Kansas |
| WildOutWest, LLC | California |
| WildTangent Games | Washington |