| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | M & C Engineering | Structural engineering | 1 |
| 2 | M E Construction | Structural engineering | 10 |
| 3 | M F T Consulting Engineers | Structural engineering | 0 |
| 4 | M Hajjar & Associates | Structural engineering | 1 |
| 5 | M Humbert, J J Seller | Structural engineering | 1 |
| 6 | M J Structures | Structural engineering | 1 |
| 7 | M K M Associates | Structural engineering | 14 |
| 8 | M L C Associates | Structural engineering | 0 |
| 9 | M S I Consulting Engineers | Structural engineering | 0 |
| 10 | M V P Engineering | Structural engineering | 0 |
| 11 | M. Hourani & Associates | Structural engineering | 9 |
| 12 | M. Kandaouroff | Structural engineering | 3 |
| 13 | M. Krstic | Structural engineering | 1 |
| 14 | M. Neumann | Structural engineering | 1 |
| 15 | M. Titiunik | Structural engineering | 1 |
| 16 | M.A. Engineering, Inc. | Structural engineering | 3 |
| 17 | M.E.J. & Associates | Structural engineering | 3 |
| 18 | M.G. Pascoe and Associates Limited | Structural engineering | 1 |
| 19 | M.l Engineering | Structural engineering | 0 |
| 20 | M.S. Yolles & Associates | Structural engineering | 36 |