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| 422 | Optimus & Standard Int'l Pte Ltd
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| 423 | Oncology Centre The
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| 424 | Oser Design Pte Ltd
199305979N | 有効 |
| 425 | Origin Jetters
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| 426 | Osi Electronics Pte. Ltd.
200604568C | 有効 |
| 427 | Olympia Printing Pte Ltd
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| 428 | Original Sin By Michelangelo's
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| 429 | Original Media Pte Ltd
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| 430 | Ong Boon Seng Pte. Ltd.
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| 431 | On Cheong Jewellery
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| 432 | Orix Capital Ltd
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| 433 | Oshika Singapore Pte Ltd
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| 434 | Ondori Pte Ltd
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| 435 | On Demand Contract & Svcs Pte Ltd
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| 436 | Orexis Trading Pte Ltd
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| 437 | Ong Ban Hong Leong (Pte) Ltd
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| 438 | Omeio Int'l Pte Ltd
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| 439 | Orion Worldwide Pte. Ltd.
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| 440 | Oliver Dental Surgery Pte Ltd
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| 441 | Oltec Pacific Center Pte Ltd
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| 442 | Outdoor Life Pte. Ltd.
200700158H | 有効 |
| 443 | Oub Centre Ltd
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| 444 | Otto Furnishings Pte. Ltd.
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| 445 | Otto Marine Ltd
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| 446 | Oto Bodycare Pte. Ltd.
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| 448 | Osim Int'l Ltd
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| 449 | Orthopaedic Associates
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