| Yalo | California |
| Yalochat, Inc. | California |
| Yamap, Inc. | |
| Yambla, Inc. | California |
| Yamo Pharmaceuticals, LLC | |
| Yamtech, inc. | Illinois |
| YAN Engines, Inc. | |
| Yaney Marketing, Inc. | Indiana |
| YantraNet, Inc. | Connecticut |
| YAP Studios | |
| YAP Therapeutics | |
| YapBuzz, LLC | |
| Yapp, Inc. | New York |
| Yapstone, Inc. | |
| Yapta, Inc. | Washington |
| Yaqeen Technology | |
| YARAL Pharma, Inc. | New Jersey |
| Yard Management Solutions | Michigan |
| Yard Stick PBC | |
| Yardi Kube | California |
| Yardi Systems, Inc. | California |
| YARDZ Technologies, Inc. | Georgia |
| Yarrow Bioscience, Inc. | |
| Yarrow Biotechnology | |
| Yarseo, LLC | Indiana |
| YASH Technologies | Nebraska |
| Yasha Sterling Management Agency, LLC | |
| YASHCO Systems | |
| YASKAWA America, Inc. | |
| Yaskawa America, Inc. | Illinois |
| Yasm Modular Assembler | Pennsylvania |
| Yaso Therapeutics, Inc. | |
| Yatiri Bio | California |
| Yavapai College | Arizona |
| Yawl Sourcinginc, Inc. | New York |
| Yaypay, Inc. | New York |
| ybot International, Inc. | Florida |
| YBY Computers | New York |
| YCD Multimedia | New York |
| Ycenter | Pennsylvania |
| YCharts, Inc. | Illinois |
| YCS PR Corporation | Puerto Rico |
| YData | Washington |
| YDOP Internet Marketing | Pennsylvania |
| YDPages, Inc. | Washington |
| Ydrive, Inc. | Washington |
| YDS Pharmatech, Inc. | |
| Yeager Marketing | |
| Yeah Design Works | |
| YEAH! Local | |