| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | Aarolac AG | architectural metalwork supplier | 0 |
| 2 | A.C.E. Machine & Metal Fab Company | architectural metalwork supplier | 1 |
| 3 | Al Abbar Group | architectural metalwork supplier | 0 |
| 4 | ALANOD Aluminium-Veredlung GmbH & Co. KG | architectural metalwork supplier | 0 |
| 5 | Alcoa, Inc. | architectural metalwork supplier | 1 |
| 6 | Aluar Aluminio Argentino | architectural metalwork supplier | 0 |
| 7 | Alu König Stahl GmbH | architectural metalwork supplier | 0 |
| 8 | American Bronze Company | architectural metalwork supplier | 1 |
| 9 | American Steel & Ornamental Iron Company | architectural metalwork supplier | 1 |
| 10 | Anvil International, Inc. | architectural metalwork supplier | 1 |
| 11 | A. Oleko IĮ Aliuminio Konstrukcijos | architectural metalwork supplier | 3 |
| 12 | Applied Bolting Technology Products, Inc. | architectural metalwork supplier | 12 |
| 13 | Aramco Steel | architectural metalwork supplier | 1 |
| 14 | Atlas Reinforcing Steel Services | architectural metalwork supplier | 2 |
| 15 | Atomic Architectural Sheet Metal, Inc. | architectural metalwork supplier | 3 |
| 16 | A. Zahner Architectural Metals | architectural metalwork supplier | 16 |
| 17 | Bailey and Debevoise | architectural metalwork supplier | 2 |
| 18 | Balguard Engineering Ltd. | architectural metalwork supplier | 1 |
| 19 | Barretts of Aspley Ltd. | architectural metalwork supplier | 1 |
| 20 | B & J Jacobs Company | architectural metalwork supplier | 1 |