| Lai Chi Kin | 3635 | Civil | 2001-07-17 | Surbana Jurong Consultants Pte. Ltd. |
| Lai Chung Hee | 4437 | Civil | 2012-03-22 | JTC Corporation (JTC) |
| Lai Han Leong | 5453 | Mechanical | 2022-03-24 | Squire Mech Private Limited |
| Lai Huen Poh | 2227 | Civil | 1986-03-20 | Yantron (Singapore) Pte. Ltd. |
| Lai Kah Cheong | 4230 | Mechanical | 2007-06-14 | PUB, Singapore's National Water Agency |
| Lai Kai Xian | 4892 | Electrical | 2017-06-15 | SP PowerGrid Limited |
| Lai Kin Sin | 2343 | Civil | 1988-01-20 | Sterling Engineers Pte. Ltd. |
| Lai Liyue | 5421 | Civil | 2021-08-26 | Defence Science and Technology Agency |
| Lai Woei Tong | 3566 | Civil | 2000-07-18 | T.Y.Lin International Pte. Ltd. |
| Lai Yeow Khuan | 2219 | Electrical | 1986-01-16 | - |
| Lai Yuh Chong Wallance | 4431 | Electrical | 2012-02-16 | Azuri Engineers Pte. Ltd. |
| Lai Yun Tai | 3710 | Electrical | 2002-05-08 | P&T Engineer Services |
| Lam Chan Keen | 4645 | Civil | 2014-10-21 | Meinhardt Infrastructure Pte. Ltd. |
| Lam Choon Kit | 5807 | Civil | 2025-10-23 | Meinhardt (Singapore) Pte Ltd |
| Lam Fuk Yuen Thomas | 5022 | Civil | 2018-02-13 | Mott MacDonald Singapore Pte Limited |
| Lam Joe Siu | 4688 | Civil | 2015-06-18 | Arup Singapore Private Limited |
| Lam Kok Leong | 2636 | Mechanical | 1991-03-20 | CMP Consultants Private Limited |
| Lam Ming Sing Bill | 3528 | Electrical | 2000-03-21 | AIS-Hill Pte. Ltd. |
| Lam Siew Ping | 4905 | Mechanical | 2017-07-18 | Conceptial (SG) Pte. Ltd. |
| Lau Ah Hwa | 3081 | Civil | 1995-01-25 | - |
| Lau Ching Luan | 4611 | Civil | 2014-06-23 | Arup Singapore Private Limited |
| Lau Gek Sing | 3532 | Mechanical | 2000-03-21 | PCA Consulting Engineers |
| Lau Joo Ming | 1354 | Civil | 1979-04-24 | MOH Holdings Pte Ltd |
| Lau Jun Ming Daniel | 5526 | Mechanical | 2023-03-23 | JTC Corporation (JTC) |
| Lau Kai Hang | 5377 | Mechanical | 2021-01-21 | MEPLOGIC ENGINEERING CONSULTANTS PTE. LTD. |
| Lau Kim Teik | 1780 | Electrical | 1982-06-09 | - |
| Lau Kin Chong | 4195 | Mechanical | 2007-04-19 | Chevalier Singapore Holdings Pte Ltd |
| Lau Kok Choy Colin | 4392 | Mechanical | 2011-03-17 | Integ Engineering Pte. Ltd. |
| Lau Kuan Ee | 5593 | Civil | 2023-10-26 | Beca Carter Hollings & Ferner (S.E.Asia) Pte Ltd |
| Lau Siang Loon | 5860 | Electrical | 2026-02-26 | SP Group |