| Applied NanoWorks | Watervliet, New York, United States |
| Applied Optoelectronics Inc. | Sugar Land, Texas, United States |
| Applied Physics Technologies | McMinnville, Oregon, United States |
| Applied Research & Photonics, Inc. | Harrisburg, Pennsylvania, United States |
| Applied Research Associates Inc. | Albuquerque, New Mexico, United States |
| Applied Science Professionals LLC | Salt Lake City, Utah, United States |
| Applied Sciences Inc. | Cedarville, Ohio, United States |
| Applied Surface Technologies | New Providence, New Jersey, United States |
| Applied Thin Films Inc. | Evanston, Illinois, United States |
| Aptech Systems Inc. | Maple Valley, Washington, United States |