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| 392 | Oh Guan Hing Sesame Oil Fty Pte Ltd
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| 393 | Ohm Engineering Pte Ltd 198500785N | 启用 |
| 394 | One Source Distribution Pte. Ltd. 200405694Z | 启用 |
| 395 | O S Electronics (s) Pte Ltd 199002317H | 启用 |
| 396 | Omni United (s) Pte. Ltd. 200009388W | 启用 |
| 397 | Omnitec Services Pte Ltd
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| 398 | Omex Pte Ltd 199605322W | 启用 |
| 399 | Officina Meccanica Sestese (S) Pte Ltd
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| 400 | Oiltex Pte Ltd 199408668Z | 启用 |
| 401 | Ohmm Pte. Ltd. 200703766R | 启用 |
| 402 | One Nine Seven Six Pte. Ltd. 200802377H | 启用 |
| 403 | Omg (S) Pte Ltd
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| 404 | Old Chang Kee
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| 405 | Oh's Farm Catering Pte. Ltd. 200400662W | 启用 |
| 406 | Offshore Construction Services Pte Ltd 199106444W | 启用 |
| 407 | Ocean Sky Int'l Ltd
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| 408 | Ocean Properties Pte Ltd
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| 409 | One Ninety Bar
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| 410 | Ogawa Health Care Pte. Ltd. 200208302C | 启用 |
| 411 | Odessa 09924900J | 启用 |
| 412 | O S Electrical & Refrigeration Trading 40884900B | 启用 |
| 413 | Omron Electronic Components Pte Ltd 200003080H | 启用 |
| 414 | One Stop Docutech 52873037A | 启用 |
| 415 | Oriv Marketing Pte Ltd 199200794K | 启用 |
| 416 | Oshima Engineering & Trading Pte. Ltd. 200307254Z | 启用 |
| 417 | Optims Asia Pte Ltd
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| 418 | Optimus & Standard Int'l Pte Ltd
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| 419 | Oncology Centre The
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| 420 | Oser Design Pte Ltd 199305979N | 启用 |