| 481 | Urban Scapes Pte Ltd
199400960E | Active |
| 482 | U Sheng Pte. Ltd.
200907466E | Active |
| 483 | Ug M&e Pte. Ltd.
201025531D | Active |
| 484 | Under One Roof Design & Contracts
52825768D | Active |
| 485 | United Soil Engineering
52924498E | Active |
| 486 | Unique Fire Protection
52957150A | Active |
| 487 | Union Jack Elevator Pte Ltd
200101190G | Active |
| 488 | Uncle Moh Interior Design & Renovation
52903948J | Active |
| 489 | Unesis Engineering Pte. Ltd.
200701571M | Active |
| 490 | Uni Engineering Works
49593200X | Active |
| 491 | Uyi (sin) Services
37774300C | Active |
| 492 | Unistar Engineering
40920300M | Active |
| 493 | Uf Technology
49192500W | Active |
| 494 | Universal Engineering & Inspection Services (s) Pte. Ltd.
200912560K | Active |
| 495 | Uwa Engineering Pte Ltd
| Active |
| 496 | Utracon Infrastructure Pte. Ltd.
200905769H | Active |
| 497 | Unison Construction Pte. Ltd.
200911922D | Active |
| 498 | Uniquetech Pte. Ltd.
200204966D | Active |
| 499 | Uni Equipment & Engineering
37206600C | Active |
| 500 | Urbn Interiors Pte. Ltd.
200805240H | Active |
| 501 | Unify Engineering Services Pte. Ltd.
200805601G | Active |
| 502 | United Tiles And Stone Works Pte. Ltd.
200705498E | Active |
| 503 | United Works Pte. Ltd.
200716702D | Active |
| 504 | U Hup Roller Shutter & Engineering Works
52967632W | Active |
| 505 | Unitex Engineering Pte. Ltd.
200920759K | Active |
| 506 | Uv Resources Pte. Ltd.
200614912H | Active |
| 507 | Unique Aluminium Enterprise
34208500W | Active |
| 508 | Ulma Formwork Singapore Pte. Ltd.
200804438R | Active |
| 509 | Unix Building Material (s) Pte. Ltd.
200515702Z | Active |
| 510 | United Sea Resources Pte. Ltd.
200512422M | Active |