| AdJourney | North Carolina |
| Adjuvant Partners, LLC | Maryland |
| Adkad Technologies, Inc. | Colorado |
| Adkins Technologies | Colorado |
| ADL Data Systems, Inc. | New York |
| Adler University | Illinois |
| AdLib, Inc. | Washington |
| AdLift | California |
| Adlucent | Texas |
| Adlumin, Inc. | |
| Adly | California |
| ADM Tronics Unlimited, Inc. | New Jersey |
| ADMA Biologics, Inc. | New Jersey |
| Admail.net | Ohio |
| Admanity, LLC | |
| adMarketplace | New York |
| AdMedia | California |
| Admera Health | New Jersey |
| Admetsys Corporation | Massachusetts |
| Administration Controls Management, Inc. | Michigan |
| Administration123 | California |
| AdminiTrack.com | Georgia |
| AdminLTE | Tennessee |
| Admins, Inc. | Massachusetts |
| Admiral | |
| Admiral Consulting Group | New Jersey |
| Admiral Online | California |
| AdmissionPros | North Carolina |
| AdmitSee, Inc. | New York |
| Admon | Delaware |
| ADMOSIS, Inc. | Washington |
| AdMuncie.com | Indiana |
| Admysys, Inc. | |
| Adna Technologies | Michigan |
| AdNabu, Inc. | Delaware |
| Adnare (Pvt) Ltd | Washington |
| ADNET Technologies | Connecticut |
| adNET Technology Management | Illinois |
| Adnormal, LLC | Texas |
| ADOA-ASET | Arizona |
| Adobe | California |
| Adobe Technology Xchange | California |
| Adobe Telcom, Inc. | California |
| ADOGANDESIGN | |
| Adoko.com | Arizona |
| Adolore BioTherapeutics, Inc. | Florida |
| Adona Medical | California |
| Adorama Camera, Inc. | New York |
| Adoriasoft | |
| Adotas | New York |