| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | U.P. Engineers & Architects | Structural engineering | 0 |
| 2 | Umerani Associates | Structural engineering | 2 |
| 3 | Unglaub-Sachs-Seuß Gesellschaft Beratender Ingenieure für Bauwesen mbH | Structural engineering | 1 |
| 4 | Unified Building Sciences & Engineering | Structural engineering | 8 |
| 5 | Upton McGougan PLC | Structural engineering | 0 |
| 6 | Upton McGougan PLC | Structural engineering | 7 |
| 7 | Upton McGougan PLC | Structural engineering | 0 |
| 8 | Upton McGougan PLC | Structural engineering | 0 |
| 9 | URS Corporation | Structural engineering | 1 |
| 10 | Utmihahlovic | Structural engineering | 1 |
| 11 | Utmost Consultants | Structural engineering | 1 |
| 12 | Uzun & Case Engineers, LLC | Structural engineering | 59 |