| ArborXR | |
| ArboStar | |
| Arbsol Solutions, Inc. | Michigan |
| Arbuckle Communications | Oklahoma |
| Arbutus Biopharma Corporation | |
| ARC Advisory Group | |
| Arc Boat Company | California |
| ARC Capital Development | Florida |
| Arc Collective | |
| ARC Document Solutions, LLC | |
| ARC Electronics | Maryland |
| ARC Group of New York | New York |
| Arc Intermedia, Inc. | |
| Arc Nano | Minnesota |
| Arc Technology Group | Illinois |
| ARC-Tech | Kansas |
| Arc-Tronics, Inc. | Illinois |
| Arc.dev | California |
| Arc10 Technologies, Inc. | |
| Arc4 Consulting, Inc. | |
| Arca Interactive, LLC | |
| Arcade | |
| Arcade | |
| Arcade AI, Inc. | |
| Arcade Electronics, Inc. | Virginia |
| Arcade Game Central | Kansas |
| Arcade Software, Inc. | California |
| Arcadia | District of Columbia |
| Arcadia Data, Inc. | California |
| Arcadia Science | California |
| Arcadia Solutions, LLC | Massachusetts |
| Arcadia University | Pennsylvania |
| Arcadian Interactive | California |
| Arcadium 3D | |
| Arcalea | Illinois |
| Arcana AI | |
| Arcana Development, LLC | Virginia |
| Arcana Software Development, LLC | |
| ArcanaNetworks, Inc. | California |
| Arcane | |
| Arcane Marketing | |
| Arcane Mirage | |
| Arcanium Capital | Delaware |
| ArcataPet.Net | California |
| Arcbazar.com, Inc. | |
| Arccomp | Arizona |
| Arccus, Inc. | |
| Arccus, Inc. | |
| Arcellx | Maryland |
| Arcen Games, LLC | North Carolina |