| # | Company name | Role | # of projects |
|---|---|---|---|
| 181 | Rountree Construction Company | Construction company | 1 |
| 182 | Rovic | Construction company | 26 |
| 183 | Rowe-Mitchell Construction Company, Inc. | Construction company | 3 |
| 184 | Royall Construction | Construction company | 1 |
| 185 | RPR Construction Company, Inc. | Construction company | 7 |
| 186 | RS Construtora | Construction company | 26 |
| 187 | RT Construtora | Construction company | 2 |
| 188 | Rubin Corp. Ltd. | Construction company | 4 |
| 189 | Rudolstädter Systembau GmbH | Construction company | 3 |
| 190 | Ruellan | Construction company | 2 |
| 191 | Rumer Engenharia | Construction company | 6 |
| 192 | Runwal Group | Construction company | 68 |
| 193 | Ruple Builders, Inc. | Construction company | 1 |
| 194 | RVC Ingeniería y Construcción | Construction company | 67 |
| 195 | Rycon Construction, Inc. | Construction company | 11 |
| 196 | Ryobi Kiso (Singapore) Private Limited | Construction company | 6 |
| 197 | Ryoki Kogyo Co.,Ltd. | Construction company | 1 |