| Gan Kok Keong Jeffrey | 4904 | Mechanical | 2017-07-18 | Mandai Park Development Pte. Ltd. |
| Gan Kong Cheong | 4653 | Mechanical | 2014-10-21 | SGSPE Pte. Ltd. |
| Gan Shwu Jiuan | 4602 | Civil | 2014-05-15 | AECOM Singapore Pte. Ltd. |
| Gan Yi Zhe | 5598 | Mechanical | 2023-11-23 | EWC Engineers Pte. Ltd. |
| Ganeshalingam Ramanan | 5568 | Civil | 2023-06-22 | Aurecon Singapore (Pte.) Ltd. |
| Ganeshmani Narayanan | 5069 | Chemical | 2018-05-16 | Chevron Corporation |
| Gao Ronghua | 4387 | Electrical | 2011-01-19 | SP PowerGrid Limited |
| Gao Xuxing | 5246 | Electrical | 2019-08-15 | Siemens Energy Pte. Ltd. |
| Gay Choon Hwee, Horace | 5836 | Electrical | 2026-01-22 | SP Group |
| Gay Yun Lin | 2494 | Mechanical | 1989-07-19 | AE&T Consultants Pte. |
| Genevieve Tan Jia Wen | 5820 | Civil | 2025-11-27 | PH Consulting Pte. Ltd. |
| Geoshua Tan Chia Chin | 5277 | Civil | 2019-10-17 | CPG Consultants Pte Ltd |
| Gerald Brian O'Toole | 3489 | Mechanical | 1999-07-20 | CH2M Hill Singapore Consulting Pte. Ltd. |
| Gerard Govin s/o Suriakumaran | 5417 | Mechanical | 2021-08-26 | Nanyang Technological University |
| Gerard Martin Pereira | 4022 | Mechanical | 2006-03-21 | SP Group |
| Ghazali Bin Embi | 4564 | Mechanical | 2013-10-17 | Emaan Inspection Pte. Ltd. |
| Glen Ong Hong Ting | 5297 | Electrical | 2019-12-05 | Defence Science and Technology Agency |
| Go Heng Huat | 4868 | Chemical | 2017-03-23 | National University Of Singapore |
| Go Xiu Qi Pamela | 5646 | Mechanical | 2024-06-27 | Ministry of Manpower |
| Goh Ai Lian Angelia | 5145 | Electrical | 2018-09-20 | Singapore Polytechnic |
| Goh Chee Chiang Joseph | 4466 | Mechanical | 2012-08-16 | DLM Pte. Ltd. |
| Goh Chee Kiong | 3750 | Civil | 2002-08-16 | Housing & Development Board |
| Goh Chee Siong | 4428 | Civil | 2012-02-16 | COWI Singapore Pte. Ltd. |
| Goh Chee Tiong | 4910 | Chemical | 2017-07-18 | National Environment Agency |
| Goh Cheng Chai | 3977 | Civil | 2005-06-21 | CMP Consultants Private Limited |
| Goh Chin Eng | 3591 | Civil | 2000-10-17 | GCE Consulting Engineers |
| Goh Chin Koon | 2290 | Civil | 1986-11-20 | GLT Engineers Pte. |
| Goh Chin Kwang | 5129 | Civil | 2018-08-16 | KTP Consultants Pte Ltd |
| Goh Chin Ong | 5702 | Civil | 2024-09-26 | VEngineers Consultancy Pte Ltd |
| Goh Ching Seng | 4484 | Electrical | 2012-10-16 | AECOM Singapore Pte. Ltd. |