| Than Dar Lin | 5463 | Civil | 2022-06-23 | Land Transport Authority |
| Thanabal s/o Kaliannan | 3419 | Civil | 1998-07-21 | Building and Construction Authority |
| Thang Him Tee | 2337 | Electrical | 1988-01-20 | Thang Services |
| Thein Kyaw | 4722 | Mechanical | 2015-10-14 | - |
| Then Joon Shin | 2780 | Civil | 1992-03-18 | Samwoh Corporation Pte. Ltd |
| Thia Chye Seng | 2774 | Mechanical | 1992-03-18 | Meranti Power Pte. Lyd. |
| Thia Kiem Lien | 1443 | Electrical | 1979-12-26 | Thia & Associates LLP |
| Thia Lee Yong | 1761 | Civil | 1982-04-30 | - |
| Thiam Chiong Seng | 4062 | Electrical | 2006-06-20 | SP PowerGrid Limited |
| Thiruchelvam Ranjan | 4772 | Electrical | 2016-05-13 | SP PowerGrid Limited |
| Thng Chee Heng | 4613 | Civil | 2014-07-17 | China Harbour (Singapore) Engineering Company Pte. Ltd. |
| Thng Thiam Chai Alec | 2560 | Electrical | 1990-05-16 | Jacobs International Consultants Pte. Ltd. |
| Thomas Kwok Wing Sit | 2038 | Civil | 1984-02-28 | Bosons Consulting Group Pte. Ltd. |
| Thong Fatt Lim | 4074 | Electrical | 2006-09-19 | Thong Engineering Services |
| Thong Kun Da Edward | 5505 | Electrical | 2023-01-26 | SP Group |
| Thong Tuck Loong | 3409 | Electrical | 1998-06-23 | Land Transport Authority |
| Thong Tuck Seng | 3306 | Civil | 1997-03-18 | Yr2000 Engineering Consultants |
| Thong Yu Kiat Augustine | 3582 | Mechanical | 2000-09-19 | Temasek Polytechnic |
| Thung Sek Kwang | 2989 | Civil | 1994-02-16 | WSP Consultancy Pte. Ltd. |
| Thuvarahan Thirilogaiswera | 4855 | Civil | 2017-02-16 | Mott MacDonald Singapore Pte Limited |
| Thwin Zaw Toe | 4656 | Mechanical | 2014-10-21 | Surbana Jurong Consultants Pte. Ltd. |
| Tian Jun | 5199 | Civil | 2019-01-17 | WYN (South East Asia) Pte. Ltd. |
| Tikeshwar Nath Pradhan | 5551 | Civil | 2023-06-22 | Meinhardt (Singapore) Pte Ltd |
| Ting Chiew Peng | 4539 | Civil | 2013-10-17 | Beca Carter Hollings & Ferner (S.E.Asia) Pte Ltd |
| Ting Ik Hing Stephen | 3348 | Electrical | 1997-08-19 | Surbana Jurong Consultants Pte. Ltd. |
| Ting Leong Hing Colin | 3344 | Civil | 1997-08-19 | Millenniums Consultants Pte. Ltd. |
| Ting Seng Kiong | 3140 | Civil | 1995-05-17 | Nanyang Technological University |
| Ting Sing Hat | 1140 | Electrical | 1976-02-24 | HHK-Delta Corporation Pte Ltd |
| Ting Sing Ping | 3121 | Mechanical | 1995-04-13 | - |
| Ting Thiam Siu | 1668 | Electrical | 1981-08-28 | Bescon Consulting Engineers Pte |