| Loo Boon Woei | 5727 | Civil | 2025-01-23 | APEL PTE. LTD. |
| Loo Chin Chye | 3816 | Mechanical | 2003-06-24 | SPH Media Limited |
| Loo Ching Nong | 3131 | Civil | 1995-05-17 | Singapore Polytechnic |
| Loo Jin Jie | 5342 | Civil | 2020-10-15 | PH Consulting Pte. Ltd. |
| Loo Lewis | 4804 | Civil | 2016-08-18 | KTP Consultants Pte Ltd |
| Loo Lim Hong | 4934 | Mechanical | 2017-09-19 | CBRE GWS Pte. Ltd. |
| Loo Pooi Hieang | 5930 | Civil | 2026-07-23 | Land Transport Authority (LTA) |
| Loo Say Guan Alvin | 5232 | Mechanical | 2019-06-20 | Elead Associates Pte. Ltd. |
| Loo Say Kian | 3226 | Civil | 1996-05-08 | Housing & Development Board |
| Loo Sun Sun Leslie | 5016 | Chemical | 2018-01-08 | Singapore Institute Of Technology |
| Loo Teck Ho | 1655 | Electrical | 1981-07-31 | Elead Associates Pte. Ltd. |
| Looi Poh Yun | 0657 | Civil | 1973-06-21 | PP Project Consultants |
| Louis Paul Fok Kow | 3163 | Civil | 1995-08-16 | Singapore Institute Of Technology |
| Low Beng Hui | 5918 | Mechanical | 2026-06-25 | Surbana Jurong Consultants Pte. Ltd. |
| Low Boon Hoe | 4174 | Electrical | 2007-04-19 | SP Group |
| Low Chee Keong | 1438 | Civil | 1979-12-26 | RJ Crocker Consultants Pte Ltd |
| Low Chee Kong | 3351 | Civil | 1997-08-19 | Ronnie & Koh Consultants Pte. Ltd. |
| Low Choon Wee | 1496 | Civil | 1980-08-19 | C W Low chartered Engineers |
| Low Chun Kiat | 5728 | Civil | 2025-01-23 | Arup Singapore Private Limited |
| Low Chwee Fong | 4936 | Mechanical | 2017-09-19 | PDC Consultants Pte. Ltd. |
| Low Chye Huat Stephen | 3397 | Mechanical | 1998-05-19 | SJ & Associates |
| Low Eng Get | 5809 | Civil | 2025-10-23 | Binnies Singapore Pte. Ltd. |
| Low Eng Kee Simon | 3603 | Civil | 2000-11-28 | - |
| Low Hock Yam | 5929 | Mechanical | 2026-07-23 | CMP Consultants Private Limited |
| Low Huei Siong | 4536 | Civil | 2013-10-17 | Woh Hup (Private) Limited |
| Low Kah Loong Edward | 4213 | Electrical | 2007-05-17 | Centrodex Engineering Pte. Ltd. |
| Low Kam Fook | 2599 | Civil | 1990-09-19 | - |
| Low Khee Thong Antoine | 0504 | Civil | 1972-09-20 | AL Building Consultants |
| Low Kia Kit | 5300 | Mechanical | 2020-01-16 | J Roger Preston (Singapore) Pte Ltd |
| Low Kim Teck Ivan | 5480 | Electrical | 2022-08-25 | SP Group |