| Company | Location |
|---|---|
| ATP Oil & Gas Corp. | Houston, Texas, United States |
| ATR Adaptive Communications Research Laboratories | Kyoto, Japan |
| attocube systems AG | Munich, Germany |
| ATX Inc. | Irving, Texas, United States |
| Auburn University - Detection and Food Safety Center | Auburn University, Alabama, United States |
| Aura Nanotechnology | Ruston, Louisiana, United States |
| Aurigin Technology Pte Ltd. | Singapore, Singapore |
| Aurora NanoDevices Inc. | Edmonton, Alberta, Canada |
| Austin Ventures | Austin, Texas, United States |
| Australian National Fabrication Facility | Scoresby, VIC, Australia |
