| Tan Ai Ching | 4463 | Civil | 2012-08-16 | WM Leow Consultants Pte. Ltd. |
| Tan Ai Li | 4903 | Mechanical | 2017-07-18 | Changi Airport Group (Singapore) Pte. Ltd. |
| Tan Aik Kang | 4545 | Civil | 2013-10-17 | Spectrum Structural Engineers |
| Tan Bee Hoon Angeline | 4112 | Civil | 2007-01-26 | Housing & Development Board |
| Tan Beng Chun | 3861 | Civil | 2003-11-18 | Chun Engineering Consultants Pte. Ltd. |
| Tan Bin Keong | 2501 | Civil | 1989-09-20 | B K Tan Consultants |
| Tan Bok Leng | 4244 | Civil | 2007-07-19 | WSP Consultancy Pte. Ltd. |
| Tan Boon Beng Bernard | 5348 | Mechanical | 2020-10-15 | Singapore Polytechnic |
| Tan Boon Hong | 0634 | Electrical | 1973-03-21 | BH Tan Associates |
| Tan Boon Hwee | 3201 | Electrical | 1996-02-14 | Powergroup Engineering |
| Tan Boon Leong | 1624 | Civil | 1981-03-24 | AIS-Hill Pte. Ltd. |
| Tan Boon Tong | 4270 | Mechanical | 2007-08-16 | Land Transport Authority |
| Tan Chai Hwee Johnson | 4695 | Civil | 2015-07-16 | Fore Urbanology |
| Tan Charng Cherng | 2416 | Civil | 1988-09-27 | Tan Charng Cherng & Associates |
| Tan Chee Hean | 3707 | Civil | 2002-05-08 | P & T Consultants Pte. Ltd. |
| Tan Chee Kean Jason | 4013 | Electrical | 2005-11-15 | Binnies Singapore Pte. Ltd. |
| Tan Chee Keong | 5472 | Mechanical | 2022-07-28 | Building and Construction Authority |
| Tan Chee Kiat | 5007 | Mechanical | 2018-01-08 | SJD Consultants Pte. Ltd. |
| Tan Chee Leng | 4159 | Civil | 2007-03-15 | MOH Holdings Pte Ltd |
| Tan Chee Sen | 4005 | Electrical | 2005-09-20 | Gammon Pte. Limited |
| Tan Chee Wee | 4915 | Civil | 2017-08-22 | Resorts World Sentosa Pte. Ltd. |
| Tan Chek Yuan | 2030 | Electrical | 1984-02-13 | DRPL Corporation Pte Ltd |
| Tan Chih Hao | 5351 | Electrical | 2020-10-15 | - |
| Tan Chin Gee | 3448 | Civil | 1998-11-17 | RCY Pte. Ltd. |
| Tan Chin Hock | 3797 | Civil | 2003-03-18 | DP Engineers Pte. Ltd. |
| Tan Chin Jiat | 5627 | Mechanical | 2024-03-28 | Building and Construction Authority |
| Tan Chin Kiang | 3165 | Civil | 1995-09-20 | CK Tan & Associates |
| Tan Chin Nien Victor | 5412 | Mechanical | 2021-06-24 | CASY Engineering Consultancy Pte. Ltd. |
| Tan Chong Lin | 3646 | Civil | 2001-08-21 | Building and Construction Authority |
| Tan Chong Poh | 4116 | Electrical | 2007-01-26 | Singapore Institute of Power & Gas |