| Lim Xin Wei | 5471 | Mechanical | 2022-07-28 | Defence Science and Technology Agency |
| Lim Yan Ping @ Lim Yoon Khe | 1049 | Civil | 1975-03-07 | Rankine & Hill (Singapore) Pte. Ltd. |
| Lim Yan Tong | 2833 | Electrical | 1992-06-15 | YT Lim Engineering Pte. Ltd. |
| Lim Yang Jie | 5611 | Mechanical | 2024-01-25 | SP Group |
| Lim Yaw Shyan | 4609 | Civil | 2014-06-23 | Building and Construction Authority |
| Lim Yew Kia Jeffrey | 5422 | Mechanical | 2021-10-28 | SP PowerGrid Limited |
| Lim Yong Kok | 3422 | Electrical | 1998-07-21 | Meinhardt (Singapore) Pte Ltd |
| Lim Yong Pin | 4793 | Civil | 2016-07-21 | 3ES Consultancy Pte. Ltd. |
| Lim Yong Ping | 5147 | Electrical | 2018-09-20 | Energy Market Authority |
| Lim Yong Shen | 5428 | Electrical | 2021-11-25 | JTC Corporation |
| Lim Yong Siah | 5685 | Electrical | 2024-08-23 | Wah Loon Plant & Instrumentation Pte. Ltd. |
| Lim Zhu Liang | 4963 | Civil | 2017-10-23 | Building and Construction Authority |
| Lin Guodong | 3933 | Electrical | 2004-12-03 | LC Electrical Consultants |
| Lin Guojia | 5858 | Electrical | 2026-02-26 | RES ENGINEERING PTE LTD |
| Lin Hoong Tat | 3910 | Mechanical | 2004-07-26 | Shevs IFT Consultants Pte. Ltd. |
| Lin Jian Jun | 4427 | Civil | 2012-02-16 | SGT Engineering Consultancy Pte. Ltd. |
| Lin Sin Ching | 3960 | Mechanical | 2005-04-19 | Leica Microsystems |
| Lin Wenjun Vincent | 4794 | Civil | 2016-07-21 | VEngineers Consultancy Pte Ltd |
| Lin Yongxiang | 4844 | Civil | 2017-01-19 | LSW Consulting Engineers Pte. Ltd. |
| Ling Boon Kok | 3739 | Civil | 2002-08-16 | Hilt Pte. Ltd. |
| Ling Chi Yee | 4790 | Mechanical | 2016-07-21 | EdgeConneX Singapore Pte. Ltd. |
| Ling Chong Yuen | 4462 | Civil | 2012-08-16 | Meinhardt (Singapore) Pte Ltd |
| Ling Lee Teck | 2553 | Civil | 1990-03-21 | L T Ling Consulting Engineers |
| Ling Shiang Yun | 3367 | Electrical | 1997-10-21 | iEngineers |
| Ling Wei | 5747 | Civil | 2025-03-27 | KTC Civil Engineering & Construction Pte Ltd |
| Lionel N K Neo | 4264 | Mechanical | 2007-07-19 | Surbana Jurong Consultants Pte. Ltd. |
| Liow Bee Leng | 3989 | Civil | 2005-07-19 | Housing & Development Board |
| Liow Kit Wei | 5771 | Civil | 2025-05-22 | - |
| Liu Difa | 4828 | Civil | 2016-10-18 | DJ Engineering Consultants Private Limited |
| Liu Jialin | 5877 | Civil | 2026-04-23 | Arup Singapore Pte Ltd |