| 541 | Omc Corpn Pte Ltd
| Active |
| 542 | Orbit S'pore Pte Ltd
| Active |
| 543 | Omnipotent Marketing 53070627W | Active |
| 544 | Orirex Plastics Pte Ltd 200000871N | Active |
| 545 | One Green Technology (pte.) Ltd. 200909640R | Active |
| 546 | Optique Zone Safety 53031826A | Active |
| 547 | Oceanbase Technology Pte Ltd
| Active |
| 548 | Ozak Seiko (s) Pte Ltd 199306520K | Active |
| 549 | Oval Asia Pacific Pte Ltd 199104618Z | Active |
| 550 | Otano Trading 34056600X | Active |
| 551 | Omb Valves Asia Pte Ltd 199408358D | Active |
| 552 | Omni Metal Pte Ltd 199100474W | Active |
| 553 | Ong Kah Hoe Industrial Pte Ltd 198802281C | Active |
| 554 | Oceanic Underwater Services (pte) Ltd 197301728N | Active |
| 555 | Overseas Resources Pte. Ltd. 197800760Z | Active |
| 556 | Opus Precision Instruments Pte Ltd 199205926N | Active |
| 557 | Oceanav Pte. Ltd. 198200148W | Active |
| 558 | Ong Fencing Contractor Co 25981800C | Active |
| 559 | Outboard & Marine (Pte) Ltd
| Active |
| 560 | One Trading And Industrial Pte. Ltd. 198105576K | Active |
| 561 | Olympia Diary (s'pore) Pte Ltd 199303611N | Active |
| 562 | Ocs Facilities Management Singapore Pte. Ltd. 199204370H | Active |
| 563 | Oceanic Link Pte Ltd 199903557W | Active |
| 564 | Orchard Parksuites Pte Ltd 199206423E | Active |
| 565 | Onn Wah Precision Engineering Pte Ltd 199900015D | Active |
| 566 | Orient Technology (s) Pte Ltd 199101169M | Active |
| 567 | Oilwell Supply Pte Ltd 199000818Z | Active |
| 568 | Oakwell Engineering International Pte Ltd 199205671Z | Active |
| 569 | Omron Electronics Pte Ltd 200100591Z | Active |
| 570 | Omni Plus System Pte. Ltd. 200202443Z | Active |