| # | Company name | Role | # of projects |
|---|---|---|---|
| 21 | Zayd Empreendimentos Imobiliários | Construction company | 2 |
| 22 | ZDA Construtora | Construction company | 1 |
| 23 | Zechbau Holding GmbH | Construction company | 1 |
| 24 | Zelan Berhad | Construction company | 0 |
| 25 | Zelan Holdings (M) Sdn Bhd | Construction company | 1 |
| 26 | Zen Pacific Group | Construction company | 12 |
| 27 | Zenitaka Corpration | Construction company | 9 |
| 28 | Zervos Bau GmbH | Construction company | 0 |
| 29 | Zeta Design+Build | Construction company | 1 |
| 30 | Zeyga Desarrollos Inmobiliarios | Construction company | 1 |
| 31 | Zhytlobud | Construction company | 2 |
| 32 | Zion Briga Construction Ltd. | Construction company | 13 |
| 33 | ZIPP a.s | Construction company | 4 |
| 34 | Zisso Construction Company Ltd. | Construction company | 1 |
| 35 | ZKF Engenharia Ltda | Construction company | 25 |
| 36 | Zogbi Engenharia | Construction company | 14 |
| 37 | Züblin A/S | Construction company | 3 |
| 38 | Züblin Nederland BV | Construction company | 8 |
| 39 | Zucco Construction Limited | Construction company | 1 |
| 40 | Zuckhan Incorporações e Participações Ltda. | Construction company | 5 |