| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Quadra Construtora | Construction company | 30 |
| 2 | Quadra Engenharia | Construction company | 1 |
| 3 | QualiCons | Construction company | 3 |
| 4 | Quality Incorporadora | Construction company | 4 |
| 5 | Quanta Engenharia | Construction company | 3 |
| 6 | Queensland Motorways Limited | Construction company | 1 |
| 7 | Queiroz Construtora | Construction company | 8 |
| 8 | Queiroz Galvão Empreendimentos | Construction company | 88 |
| 9 | Queiroz Silveira | Construction company | 3 |
| 10 | Quill Construction Sdn. Bhd. | Construction company | 2 |
| 11 | Quillery Bâtiment | Construction company | 0 |
| 12 | Quintela Torres Incorporadora | Construction company | 7 |
| 13 | Quota Empreendimentos Imobiliários | Construction company | 3 |