| Annzo Corporation | |
| Anode Technology Company | |
| Anodos, LLC | Wyoming |
| Anodyne Nanotech | Massachusetts |
| Anoka Technical College | Minnesota |
| Anokion | Massachusetts |
| Anokiwave, Inc. | California |
| Anolytics | New York |
| Anomali | California |
| Anomaly Innovations | California |
| Anomaly Insights, Inc. | New York |
| Anonabox | California |
| Anonyme Labs, Inc. | Utah |
| Anonymity Labs, Inc. | |
| Anova | California |
| Anovaa | Pennsylvania |
| ANP Technologies, Inc. | Delaware |
| Anri Studio | |
| Anrok, Inc. | California |
| Ansa Biotechnologies, Inc. | California |
| Ansa Capital | New York |
| Ansafone Contact Centers | California |
| Ansen Corporation | New York |
| Ansh Labs | Texas |
| Anshinsoft Corporation | California |
| Ansin Technologies | Massachusetts |
| Ansira | |
| Anson Stoner | |
| AnsonErvin, Inc. | |
| ANSR Source Content US, LLC | Texas |
| ANSR, Inc. | |
| Anstey Hodge Advertising Group | |
| Ansun BioPharma | |
| Answer Media | |
| Answer Quest Technologies, Inc. | Maryland |
| AnswerDash | |
| Answergroup.net | |
| AnswerLab | California |
| Answerport | Wisconsin |
| AnswerRocket | Georgia |
| Answers, etc. | Texas |
| AnswerThePublic | California |
| Answerthink | Georgia |
| Ansys Government Initiatives, Inc. | |
| Ansys, Inc. | Pennsylvania |
| ANT Computer, Inc. | California |
| Antall Training | Ohio |
| Antanet | Virginia |
| Antarctic Agency | |
| Antares Capital Corporation | Florida |