| 511 | Keepco Limited
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| 512 | Koastal Link Marine Pte. Ltd.
201423269G | 启用 |
| 513 | K K Sng Colorectal & General Surgery Pte. Ltd.
201423292H | 启用 |
| 514 | Kinmen Singapore Organization Llp
T10LL1034L | 启用 |
| 515 | K.dots Limited Liability Partnership
T10LL1238K | 启用 |
| 516 | Kilsa Global Pte. Ltd.
201507520N | 启用 |
| 517 | Krave Collections
53306379E | 启用 |
| 518 | Kydz International Llp
T10LL1079L | 启用 |
| 519 | K Bar Cafe Llp
T10LL1271C | 启用 |
| 520 | Kailu International Llp
T10LL1520K | 启用 |
| 521 | Kobda Learning Llp
T11LL0952F | 启用 |
| 522 | Kidskingdom @ Bedok Reservoir Llp
T11LL1013K | 启用 |
| 523 | Kosit
53162227D | 启用 |
| 524 | Kei Lee Llp
T15LL0309E | 启用 |
| 525 | Kura Transport
53289277A | 启用 |
| 526 | Kim San Leng Food Centre (bukit Timah) Llp
T14LL1643H | 启用 |
| 527 | Kitchen Sense Llp
T10LL1196B | 启用 |
| 528 | Kindorama Pte. Ltd.
201422341M | 启用 |
| 529 | Kalizoe Investments Pte. Ltd.
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| 530 | Kg Demolition Pte. Ltd.
201512308D | 启用 |
| 531 | Koshidaka Holdings Co., Ltd.
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| 532 | Keytrade Enterprise Pte. Ltd.
201309532N | 启用 |
| 533 | Kingpings Llp
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| 534 | Ktl Transport Services
52865356C | 启用 |
| 535 | K Pop Yakitori Pte. Ltd.
201332881K | 启用 |
| 536 | Kuah & Associates Llp
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| 537 | Kampong Management International Pte. Ltd.
201316187D | 启用 |
| 538 | Koo Tech Engineering & Trading
53267529X | 启用 |
| 539 | K P Builder Pte. Ltd.
201333572C | 启用 |
| 540 | Kayka Llp
T11LL1057C | 启用 |