| Kristian Tung Jing Yuan | 5572 | Mechanical | 2023-07-27 | CPG Consultants Pte Ltd |
| Kua Siang Meng | 4326 | Civil | 2009-09-17 | Providence Consulting Engineers |
| Kuan Eng Tiong | 2875 | Electrical | 1992-10-21 | GE Grid Solutions Pte Ltd |
| Kuan Samuel | 3179 | Civil | 1995-10-18 | PEC Civil Consultant Pte. Ltd. |
| Kueh Lip Kuang | 1851 | Civil | 1982-11-23 | CPG Consultants Pte Ltd |
| Kuek Puay Hei | 4560 | Electrical | 2013-10-17 | - |
| Kulandaivelu Muthu Kumar | 4857 | Civil | 2017-02-16 | CPG Consultants Pte Ltd |
| Kum Yung Juan | 5369 | Civil | 2021-01-21 | Singapore Institute Of Technology |
| Kumar Balesh | 4726 | Electrical | 2015-10-14 | JPL Consultants Pte. Ltd. |
| Kumara Govindar Rasu | 4637 | Civil | 2014-10-21 | ABL Consultants Pte. Ltd. |
| Kumarasamy Jeyatharan | 5408 | Civil | 2021-03-25 | Land Transport Authority |
| Kumarasamy Yathunanthan | 4685 | Electrical | 2015-05-19 | YHW LLP |
| Kumaravel Udayasurian | 4438 | Civil | 2012-03-22 | AECOM Singapore Pte. Ltd. |
| Kuncha Venkatapathiah Channakeshava | 4306 | Civil | 2009-04-16 | Exyte Singapore Pte. Ltd. |
| Kurniawan Prasetya Pieth | 5462 | Civil | 2022-05-26 | Arup Singapore Private Limited |
| Kwa Chin Soon | 4906 | Civil | 2017-07-18 | Building and Construction Authority |
| Kwa Guian Sin | 1582 | Mechanical | 1981-03-24 | Cundall Singapore Pte. Ltd. |
| Kwan Choon Shien Stephen | 3896 | Civil | 2004-06-22 | KTP Consultants Pte Ltd |
| Kwang Cheok Sen | 3905 | Electrical | 2004-07-26 | Housing & Development Board |
| Kwek Yong | 5888 | Civil | 2026-04-23 | Building And Construction Authority (BCA) |
| Kwek Yong Teck | 3067 | Civil | 1994-10-19 | JIB Specialist Consultants Pte. Ltd. |
| Kwek Yoong Yoong Matthew | 3010 | Mechanical | 1994-05-18 | - |
| Kwok Foo Seng | 2356 | Electrical | 1988-02-24 | DRPL Corporation Pte. Ltd. |
| Kwok Fook Kee | 2026 | Civil | 1984-01-24 | - |
| Kwong Kam Seng | 3504 | Mechanical | 1999-09-21 | Sanli E&C Pte. Ltd. |
| Kwong Kok Chan | 2226 | | 1986-03-20 | PacificLight Power Pte. Ltd. |
| Kwong Sin Keong | 4245 | Civil | 2007-07-19 | Housing & Development Board |
| Kyaw Kyaw Myo | 5212 | Mechanical | 2019-04-18 | Technics Engineering Pte Ltd |
| Kyaw Thiha Lwin | 5724 | Civil | 2025-01-23 | Beca Carter Hollings & Ferner (S.E.Asia) Pte Ltd |
| Ladchumanan Lavan | 5784 | Civil | 2025-07-24 | RCY Pte. Ltd. |