| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | G A Escobar Associates | Structural engineering | 0 |
| 2 | G A L Associates | Structural engineering | 2 |
| 3 | G D Klieger Inc | Structural engineering | 2 |
| 4 | G F D S Engineers | Structural engineering | 1 |
| 5 | G K C Associates | Structural engineering | 0 |
| 6 | G M Architecture Studio PC | Structural engineering | 1 |
| 7 | G M Hill Engineering Inc | Structural engineering | 1 |
| 8 | G N G Structural Engineers | Structural engineering | 2 |
| 9 | G N T Engineers | Structural engineering | 1 |
| 10 | G R Turner & Associates | Structural engineering | 0 |
| 11 | G.E. Origenes & Associates | Structural engineering | 1 |
| 12 | Gabriel Trajtenberg Engineers | Structural engineering | 48 |
| 13 | GACE Consulting Engineers | Structural engineering | 68 |
| 14 | Gagarin Farruggia Gibisch & Reis | Structural engineering | 1 |
| 15 | GAI Consultants | Structural engineering | 9 |
| 16 | Galberg Mark Engineers | Structural engineering | 2 |
| 17 | Gamayo Sanchez & Associates Inc | Structural engineering | 1 |
| 18 | Gang Engineering | Structural engineering | 1 |
| 19 | Gannett Fleming | Structural engineering | 0 |
| 20 | Gannett Fleming Inc. | Structural engineering | 0 |