| # | Company name | Role | # of projects |
|---|---|---|---|
| 21 | J.B. Mouton, Inc. | Construction company | 8 |
| 22 | J.B. Ohligschlager | Construction company | 1 |
| 23 | J.Bianchi Construtora LTDA | Construction company | 18 |
| 24 | J.C. Beal Construction Inc. | Construction company | 4 |
| 25 | J.C. Evans Construction | Construction company | 0 |
| 26 | J.E. Jester, Inc. | Construction company | 2 |
| 27 | J.G. Attaway Construction Company | Construction company | 1 |
| 28 | J.H. McKenzie | Construction company | 1 |
| 29 | J.Kottermair Bauunternehmung GmbH | Construction company | 0 |
| 30 | J.P. Construction | Construction company | 0 |
| 31 | J.P. DiMisa Luxury Homes | Construction company | 1 |
| 32 | J.S. Watson and Associates Ltd. | Construction company | 2 |
| 33 | J.T. Ross and Son | Construction company | 3 |
| 34 | J.W. Snyder Co. | Construction company | 1 |
| 35 | J&B Steel Erectors, Inc. | Construction company | 4 |
| 36 | J&L Steel Erectors | Construction company | 3 |
| 37 | Jackson Lewis Company Limited | Construction company | 2 |
| 38 | Jacob Steinmetz Thorn | Construction company | 1 |
| 39 | Jacobsmeyer Mauldin Construction Company | Construction company | 3 |
| 40 | Jacobson Brothers | Construction company | 2 |