| Tan Heong Kim | 5213 | Mechanical | 2019-04-18 | Defence Science and Technology Agency |
| Tan Hock Lye | 3794 | Civil | 2003-03-18 | HL Consulting Engineers |
| Tan Hon Kong Johnson | 3640 | Electrical | 2001-07-17 | EWC Engineers Pte. Ltd. |
| Tan Hong Hin | 2146 | Electrical | 1985-04-16 | - |
| Tan Hong Lee | 5741 | Mechanical | 2025-03-27 | Defence Science and Technology Agency |
| Tan Hooi Kiat | 2819 | Civil | 1992-05-20 | THK Design Engineering Pte. Ltd. |
| Tan Hou | 4949 | Electrical | 2017-10-23 | SP PowerGrid Limited |
| Tan Hua Oo | 2883 | Mechanical | 1992-12-16 | Mechelect Engineering Services |
| Tan Huan Kee Christopher | 4314 | Electrical | 2009-05-21 | Apec Fusion Pte Ltd |
| Tan Hui | 3620 | Civil | 2001-05-11 | CBM Solutions Pte. Ltd. |
| Tan Hui Koon | 4578 | Mechanical | 2014-01-16 | - |
| Tan Hui Xin | 4771 | Electrical | 2016-05-13 | SP Group |
| Tan Hwee Khoon | 3234 | Electrical | 1996-06-14 | Squire Mech Private Limited |
| Tan Hwee Tang | 2424 | Electrical | 1988-11-25 | TPIS Associates Pte Ltd |
| Tan Jian Zhi | 5379 | Mechanical | 2021-01-21 | Building and Construction Authority |
| Tan Jing Ying | 5808 | Civil | 2025-10-23 | Building and Construction Authority |
| Tan Jiok Saw | 2409 | Civil | 1988-07-20 | JS Tan Consultants Pte. Ltd. |
| Tan Jiun Yang | 5717 | Civil | 2024-10-24 | AECOM Singapore Pte. Ltd. |
| Tan Jong Meng | 4394 | Electrical | 2011-04-28 | Bescon Engineering Services Pte. Ltd. |
| Tan Juay Hwa | 4166 | Mechanical | 2007-03-15 | Delta Crest Pte. Ltd. |
| Tan Jui Teck | 3619 | Civil | 2001-05-11 | TJT Consultants LLP |
| Tan Jun Guo | 5812 | Electrical | 2025-10-23 | DLM Pte. Ltd. |
| Tan Jun Jie | 5608 | Mechanical | 2024-01-25 | Land Transport Authority |
| Tan Jun Tat | 5441 | Electrical | 2022-01-27 | SP Group |
| Tan Junming | 5730 | Electrical | 2025-02-27 | Amega Precess Management Pte Ltd |
| Tan Kah Chuan David | 3730 | Civil | 2002-06-21 | Arup Singapore Private Limited |
| Tan Kah Hock | 2842 | Mechanical | 1992-07-15 | Hong Lip Enng. Works Pte Ltd |
| Tan Kai Chuang | 4634 | Electrical | 2014-10-21 | SP PowerGrid Limited |
| Tan Kang Hai | 3199 | Civil | 1996-02-14 | Nanyang Technological University (NTU) |
| Tan Kang Zhi Raymond | 5507 | Electrical | 2023-01-26 | DRPL Corporation Pte. Ltd. |