| Lee Chin Hoo | 2933 | Mechanical | 1993-06-16 | Pfizer Asia Manufacturing Pte. Ltd. |
| Lee Chin Soon Gabriel | 4758 | Mechanical | 2016-02-16 | JTC Corporation |
| Lee Ching Huey | 3387 | Electrical | 1998-04-21 | J Roger Preston (Singapore) Pte Ltd |
| Lee Chong Jeng | 5461 | Civil | 2022-05-26 | Woh Hup Pte Ltd |
| Lee Choon Keat | 5804 | Civil | 2025-10-23 | Defence Science and Technology Agency |
| Lee Choon Kuan | 5334 | Civil | 2020-09-17 | Structech Pte. Ltd. |
| Lee Choon Syian | 5275 | Civil | 2019-10-17 | Housing & Development Board |
| Lee Chow Khoon | 2194 | Civil | 1985-09-30 | Watt Engineering Consultants |
| Lee Chow Shiong | 2184 | Electrical | 1985-07-19 | CSL & Associates |
| Lee Chun Chiat Kelvin | 4932 | Electrical | 2017-09-19 | Euler Engineering Consultancy LLP |
| Lee Chung Shek | 2530 | Civil | 1990-01-23 | - |
| Lee Chwee Chay | 2973 | Mechanical | 1993-10-20 | Aurecon Singapore (Pte.) Ltd. |
| Lee Ee Hui | 5267 | Civil | 2019-10-17 | Landmark Consultant Pte. Ltd. |
| Lee Eng Kiang | 4496 | Electrical | 2013-01-23 | Changi Airport Group (Singapore) Pte. Ltd. |
| Lee Foh Sang | 1271 | Civil | 1977-05-19 | Chong & Lee Consulting Engineers LLP |
| Lee Fook Ch'ng | 3629 | Mechanical | 2001-06-12 | PTP Engineers Pte. Ltd. |
| Lee Fook Hon | 2515 | Electrical | 1990-01-23 | Lee Fook Hon Consulting Engineer |
| Lee Fu Chun | 5547 | Electrical | 2023-05-18 | SP PowerGrid Limited |
| Lee Fue Hwan | 4081 | Civil | 2006-10-17 | Land Transport Authority |
| Lee Heng Cheong | 3431 | Civil | 1998-09-15 | - |
| Lee Hiang Meng | 4067 | Civil | 2006-06-20 | PAL Consultancy Pte. Ltd. |
| Lee Hock Kiat Sebastian | 4816 | Electrical | 2016-10-18 | Elpro Engineering Services Pte Ltd |
| Lee Hon Leong | 2374 | Civil | 1988-03-16 | Lee Consultants |
| Lee Hong Chi | 5006 | Mechanical | 2018-01-08 | LKH Fire Engineering Pte Ltd |
| Lee Hong Keow | 2307 | Civil | 1987-03-17 | S B Ng & Associates C E |
| Lee Huay Sing | 3946 | Electrical | 2005-01-18 | WSP Consultancy Pte. Ltd. |
| Lee Jee Teng Daniel | 4000 | Civil | 2005-09-20 | Jacobs International Consultants Pte. Ltd. |
| Lee Jen Chieh | 5518 | Electrical | 2023-02-23 | PUB, Singapore's National Water Agency |
| Lee Jia Yi | 5914 | Civil | 2026-06-25 | PUB, Singapore's National Water Agency |
| Lee Jian Hui | 5682 | Civil | 2024-08-23 | Sterling Engineers Pte. Ltd. |