| # | Company name | Role | # of projects |
|---|---|---|---|
| 61 | Bansal & Associates, Inc. | MEP engineering | 2 |
| 62 | Barbanel | MEP engineering | 13 |
| 63 | Bard, Rao + Athanas Consulting Engineers | MEP engineering | 50 |
| 64 | Barrett Woodyard & Associates, Inc. | MEP engineering | 18 |
| 65 | Batson Bravo Engineers | MEP engineering | 5 |
| 66 | BCER Engineering, Inc. | MEP engineering | 4 |
| 67 | Beca Carter Hollings & Ferner | MEP engineering | 4 |
| 68 | Beca Carter Hollings and Ferner (South East Asia) Private Limited | MEP engineering | 79 |
| 69 | Beca Group | MEP engineering | 5 |
| 70 | Becker-Huke-Hoffmann GmbH | MEP engineering | 2 |
| 71 | Beckett Engineering | MEP engineering | 1 |
| 72 | Beitmen & Huyett Inc. | MEP engineering | 0 |
| 73 | Benbassat & Sporidis Company | MEP engineering | 10 |
| 74 | Bentley Engineers | MEP engineering | 2 |
| 75 | Bessent, Hammack and Ruckman, Inc. | MEP engineering | 14 |
| 76 | BET Gilbert Jost | MEP engineering | 1 |
| 77 | BET Louis Choulet | MEP engineering | 1 |
| 78 | BETEX | MEP engineering | 2 |
| 79 | Bilt Middle East LLC | MEP engineering | 15 |
| 80 | Black & Veatch Corporation | MEP engineering | 2 |