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| 513 | Yg 1 Tools Asia Pte Ltd
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| 514 | Yee Lim Adhesives Industries
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| 515 | Yeo Keng Sin Transport Service
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| 516 | Yeow Seng (Shark's Fin) Pte Ltd
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| 517 | Y.h.h Manufacturing Pte. Ltd.
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| 519 | Yang Yun Xin Bus Service
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| 520 | Yang Marine Automation Pte. Ltd.
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| 521 | Yang Hua Cake House
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| 522 | Yacht Construction (sea) Pte Ltd
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| 523 | Yew Huat Scaffolding Work
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| 525 | Yat Guan Investment Pte Ltd
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| 526 | Yeo Trailer Engineering & Trading
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| 527 | Yancey Huang (private) Limited
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| 528 | Yeow Hwa Engineering Pte Ltd
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| 529 | Yap Sun Hardware Mfy Pte Ltd
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| 530 | Yew Eng Trading Company
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| 532 | Yee Lee Pte Ltd
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| 533 | Yeung Yew Pte. Ltd.
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| 534 | Yew Aik (s) Pte Ltd
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| 535 | Yargay Mci Pte. Ltd.
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| 536 | Yen Thiam Construction Pte Ltd
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| 537 | Yan Tong Credit Pte. Ltd.
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| 538 | Yn Electrical & Trading
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