| # | Company name | Role | # of projects |
|---|---|---|---|
| 121 | Ahal Contracting Company | Construction company | 5 |
| 122 | Ahmad Zaki Sdn Bhd | Construction company | 1 |
| 123 | Ahmadiah Contracting & Trading Co. | Construction company | 10 |
| 124 | Ahmed Bin Dasmal Contracting Co. | Construction company | 1 |
| 125 | Ahmed Mansoor Al A’Ali Co. BSC | Construction company | 0 |
| 126 | Ahsel Construction | Construction company | 14 |
| 127 | Aikyo Corporation | Construction company | 0 |
| 128 | Ail Inn Corporation | Construction company | 0 |
| 129 | Air Rite Control, Inc. | Construction company | 0 |
| 130 | Aisawa Construction Co., Ltd. | Construction company | 1 |
| 131 | AjaxTreplan Construtora | Construction company | 11 |
| 132 | AJD Construction Company | Construction company | 6 |
| 133 | Åke Larsson Construction AS | Construction company | 7 |
| 134 | Akfen Insaat | Construction company | 48 |
| 135 | AKOR B.V. | Construction company | 3 |
| 136 | Aktürk Construction Co. | Construction company | 30 |
| 137 | Al Ahmadiah Contracting & Trading | Construction company | 21 |
| 138 | Al Ahmed Development & Construction L.L.C | Construction company | 1 |
| 139 | Al Amar Engineering & Cont. Co. L.L.C. | Construction company | 2 |
| 140 | Al Ashram Contracting | Construction company | 1 |