| 451 | Yongnam Engineering & Construction (Pte) Ltd
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| 452 | Ymd (s) Pte Ltd 199704287C | Active |
| 453 | Ykn Builders Pte Ltd 200104723G | Active |
| 454 | Yew Lee Metal Works Pte Ltd 199300395G | Active |
| 455 | Yantai Raffles Shipyard Pte Ltd
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| 456 | Yau Hoe Garment Co. Pte Ltd 198305354C | Active |
| 457 | Yuquan Language School Pte Ltd 199607955H | Active |
| 458 | Yuen Thong & Co (pte) Ltd 197602569N | Active |
| 459 | Yu Gyo Engineering & Trading Pte Ltd 198903703N | Active |
| 460 | Yunnan General Supplier 27545700A | Active |
| 461 | Yosun S'pore Pte Ltd
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| 462 | Yoong Precision Engineering & Trading
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| 463 | Yong Fah Garments Mfy
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| 464 | Yih Tyng Intertrade Pte Ltd
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| 465 | Yit Fatt Engineering Pte. Ltd. 200817299C | Active |
| 466 | Yhs (singapore) Pte Ltd 199401863Z | Active |
| 467 | Y C Tan & Co T00PF0691H | Active |
| 468 | Yuen Tung (wah Kee) Gems & Jewellery 35761500W | Active |
| 469 | Ytc Hotels Ltd 196800075Z | Active |
| 470 | Yu Cheng Timber Industries & Trading 46793300J | Active |
| 471 | York Hotel Pte Ltd
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| 472 | Yong Cheong Marine & Engineering Pte Ltd 199305943K | Active |
| 473 | Yeo Neurology & Clinical Neurophysiology T08CM1937G | Active |
| 474 | Yck Tools Pte Ltd 198900435C | Active |
| 475 | Yamamizu S'pore (Pte) Ltd
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| 476 | Yeoh Swee Inn Endocrine & Medical Clinic
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| 477 | Yeo Wholesale & Trading Pte Ltd
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| 478 | Yee Florist 32275600J | Active |
| 479 | Yang Fibreglass Service 33362100W | Active |
| 480 | Yan San Metals Pte Ltd 199200367G | Active |