| 601 | Wavelab Scientific Pte Ltd
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| 602 | Watkins Syndicate S'pore Pte Ltd
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| 603 | Wearne Bros Services Pte Ltd
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| 604 | Wisma M&e
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| 605 | Wing Yap Motor
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| 606 | Willas-array S'pore (Pte) Ltd
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| 607 | White Weddings
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| 608 | Wilmax Control Systems Pte Ltd
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| 609 | Westech Systems Pte Ltd
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| 610 | Wendy Garments
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| 611 | Wharton Junior Academy Pte Ltd
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| 612 | Web Economy Technology Pte Ltd
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| 613 | Web Systems Pte Ltd
199601074N | 有効 |
| 614 | Wee Breast & General Surgery
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| 615 | Waterscape System Professionals
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| 616 | Waterline Agencies
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| 617 | Wee Jo Enterprise Pte. Ltd.
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| 618 | Wt Precision Equipment Pte. Ltd.
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| 619 | Words Worth Media Management Pte Ltd
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| 620 | Wmg Pte Ltd
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| 621 | Wine Network Pte Ltd
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| 622 | Wilkie Prestige Brands Pte. Ltd.
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| 623 | Wilshire Associates Inc
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| 624 | Whitestone Consulting Pte Ltd
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| 625 | West Home Interior
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| 626 | West Coast Dental Clinic
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| 627 | Wellchem Pharmaceuticals Pte Ltd
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| 628 | Weka Asia Pte Ltd
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| 629 | Wan Tai Co
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| 630 | Wasun Sofa
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