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| Kan Kok Wah | 4443 | Electrical | 2012-04-20 | Dai-Dan Co., Ltd. |
| Kan Lock Meng | 4149 | Civil | 2007-02-23 | PUB, Singapore's National Water Agency |
| Kan Ngee Meng | 3407 | Civil | 1998-06-23 | OGP Konsult Pte. Ltd. |
| Kandiah Paskkaran | 5113 | Civil | 2018-07-19 | Land Transport Authority |
| Kang Boon Lian | 5409 | Mechanical | 2021-04-22 | Measurement & Verification Pte Ltd |
| Kang Guan Xun | 5443 | Electrical | 2022-01-27 | SP Group |
| Kang Jianhan | 4295 | Civil | 2009-02-19 | CSTech Consultants And Engineering Pte. Ltd. |
| Kang Mi | 5194 | Civil | 2018-12-14 | Building and Construction Authority |
| Kang Swee Ann | 4399 | Civil | 2011-07-22 | KSA Consultants |
| Kang Wee Ping | 4328 | Civil | 2009-09-17 | BG&E Consulting Engineers Pte. Ltd. |
| Kang Yi Shu Vance | 5242 | Civil | 2019-07-18 | JS Tan Consultants Pte. Ltd. |
| Kathaperumal Ravindiran | 4625 | Civil | 2014-09-18 | VR Engineering & Consultants Pte. Ltd. |
| Kee Chen Siang | 5356 | Civil | 2020-10-15 | CPG Consultants Pte Ltd |
| Kee Ching Guan | 4413 | Civil | 2011-09-23 | CAGA Consultants Pte. Ltd. |
| Kee Kam Oon | 3126 | Civil | 1995-05-17 | K & R Consulting Engineers Pte. Ltd. |
| Kelly Tan Hung Khing | 5009 | Electrical | 2018-01-08 | SP PowerGrid Limited |
| Kelvin Ong Kian Sien | 4960 | Civil | 2017-10-23 | Cornerstone Civil Engineers |
| Kenneth Tan Jiecong | 5521 | Electrical | 2023-03-23 | Defence Science and Technology Agency |
| Kevin Lee Zhi Chung | 5413 | Mechanical | 2021-06-24 | Belmacs Pte Ltd |
| Kew Mun Seng | 5331 | Civil | 2020-09-17 | SP PowerGrid Limited |
| Khairil Anuar Bin Malek | 5700 | Mechanical | 2024-09-26 | Emaan Inspection Pte. Ltd. |
| Khen Kee Siang | 5825 | Civil | 2025-11-27 | Kian Hock Engineering Pte. Ltd . |
| Khew Teck Fook Edwin | 2890 | Chemical | 1992-12-16 | EQTech Holdings Pte Ltd |
| Khine Hnin Yi | 5558 | Civil | 2023-06-22 | Aurecon Singapore (Pte.) Ltd. |
| Kho Chza Main | 4147 | Civil | 2007-02-23 | CPG Consultants Pte Ltd |
| Khoh Tio Ching | 4874 | Civil | 2017-04-20 | Engineers 717 Pte. Ltd. |
| Khong Heng Poh | 1116 | Mechanical | 1975-07-25 | - |
| Khoo Beng Huat Dennis | 2379 | Civil | 1988-03-16 | KBH Consultant |
| Khoo Cheng Hoon Johnny | 3507 | Civil | 1999-09-21 | - |