| # | Company name | Role | # of projects |
|---|---|---|---|
| 41 | Rakennusliike Veikko Matikainen | Construction company | 1 |
| 42 | Rakennustoimisto Eero Reijonen Oy | Construction company | 1 |
| 43 | Ram Aderet Ltd. | Construction company | 8 |
| 44 | RAMCO | Construction company | 2 |
| 45 | Ramet Ltd. | Construction company | 3 |
| 46 | Ramora Consultoria Incorporação e Construção Civil LTDA | Construction company | 1 |
| 47 | Ramos Catarino Brasil | Construction company | 4 |
| 48 | Randall Construction & Plant Group | Construction company | 0 |
| 49 | Ranga IV UAB | Construction company | 19 |
| 50 | Ranneklev Bros. Inc. | Construction company | 1 |
| 51 | Rapid Response Construction, Inc. | Construction company | 2 |
| 52 | Rasmussen & Schiøtz A/S | Construction company | 3 |
| 53 | Rassco Ltd. | Construction company | 25 |
| 54 | Ratko Mitrovic Holdings | Construction company | 6 |
| 55 | Ravi Construction Ltd. | Construction company | 4 |
| 56 | Raz - Shachaf Construction Ltd. | Construction company | 2 |
| 57 | RAZ Engenharia | Construction company | 1 |
| 58 | Razel | Construction company | 1 |
| 59 | RBS Skals | Construction company | 1 |
| 60 | RD Incorporações | Construction company | 18 |