| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Y. Avrahami Ltd. | Construction company | 14 |
| 2 | Y. D. Levy Albert Building & Investments Ltd. | Construction company | 11 |
| 3 | Y. Moskowitz | Construction company | 3 |
| 4 | Y. Stern | Construction company | 4 |
| 5 | Y. Takaoka Empreendimentos | Construction company | 6 |
| 6 | Y. Yeshayahu | Construction company | 0 |
| 7 | Y.B. Nir | Construction company | 3 |
| 8 | Y.G. Boaron Construction Ltd. | Construction company | 1 |
| 9 | Yaakov David | Construction company | 0 |
| 10 | Yahad Habonim Ltd. | Construction company | 14 |
| 11 | Yahagi Construction Co., Ltd. | Construction company | 12 |
| 12 | Yahalomit Perets Ltd. | Construction company | 18 |
| 13 | Yamagishi Construction | Construction company | 3 |
| 14 | Yamaguchi Construction Co.,Ltd. | Construction company | 1 |
| 15 | Yandow/Dousevicz Construction Corporation | Construction company | 1 |
| 16 | Yankovich Construction Ltd. | Construction company | 1 |
| 17 | Yapi Merkezi Construction Co. | Construction company | 5 |
| 18 | Yasui Construction | Construction company | 3 |
| 19 | Yau Lee Group | Construction company | 55 |
| 20 | Yaw Construction Group, Inc. | Construction company | 1 |