| Chee Yan Pong | 0572 | Amusement Ride Engineering | 2011-02-17 | Y P Chee & Associates |
| Chee Yan Pong | 0572 | Lift and Escalator Engineering | 2017-03-23 | Y P Chee & Associates |
| Chee Yao Hui | 5299 | Lift and Escalator Engineering | 2023-08-24 | Building and Construction Authority |
| Chee Yao Hui | 5299 | Amusement Ride Engineering | 2020-01-16 | Building And Construction Authority (BCA) |
| Chen Yuefeng | 4289 | Geotechnical Engineering | 2023-01-26 | KCL Consultants Pte. Ltd. |
| Cheng Ch'ng Yih | 4353 | Geotechnical Engineering | 2012-03-22 | JC.Geo Consultants Pte Ltd |
| Cher Chee Ping | 3976 | Access Platform Engineering | 2017-03-23 | TUV SUD A-Reliance Pte. Ltd. |
| Cher Chee Ping | 3976 | Lift and Escalator Engineering | 2017-03-23 | TUV SUD A-Reliance Pte. Ltd. |
| Chew Chee Chong | 4580 | Lift and Escalator Engineering | 2017-03-23 | TUV SUD A-Reliance Pte. Ltd. |
| Chew Chee Chong | 4580 | Access Platform Engineering | 2017-08-22 | TUV SUD A-Reliance Pte. Ltd. |
| Chew Lean Huat | 0444 | Access Platform Engineering | 2017-08-22 | - |
| Chew Lean Huat | 0444 | Pressure Vessel Engineering | 2017-08-22 | - |
| Chew Lean Huat | 0444 | Crane Engineering | 2017-08-22 | - |
| Chew Lean Huat | 0444 | Lift and Escalator Engineering | 2017-08-22 | - |
| Chew Yan Hong | 0954 | Lift and Escalator Engineering | 2017-10-23 | Chew Yan Hong Engineering Consultant |
| Chew Yan Hong | 0954 | Access Platform Engineering | 2017-03-23 | Chew Yan Hong Engineering Consultant |
| Chew Yan Hong | 0954 | Crane Engineering | 2017-03-23 | Chew Yan Hong Engineering Consultant |
| Chia Bak Khiang | 4056 | Access Platform Engineering | 2017-04-20 | Team-6 Safety Training & Consultancy (S) Pte. Ltd. |
| Chia Bak Khiang | 4056 | Amusement Ride Engineering | 2011-02-17 | Team-6 Safety Training & Consultancy (S) Pte. Ltd. |
| Chia Bak Khiang | 4056 | Lift and Escalator Engineering | 2017-04-20 | Team-6 Safety Training & Consultancy (S) Pte. Ltd. |
| Chia Bak Khiang | 4056 | Crane Engineering | 2017-04-20 | Team-6 Safety Training & Consultancy (S) Pte. Ltd. |
| Chia Bak Khiang | 4056 | Pressure Vessel Engineering | 2017-04-20 | Team-6 Safety Training & Consultancy (S) Pte. Ltd. |
| Chiam Sing Lih | 3447 | Geotechnical Engineering | 2010-03-18 | Building and Construction Authority |
| Chiang Chee Cheong | 4333 | Geotechnical Engineering | 2019-10-17 | Land Transport Authority |
| Chieng King Wu | 3020 | Geotechnical Engineering | 2007-05-17 | Geosolv Consulting Engineers LLP |
| Chin Kheng Ghee | 4821 | Geotechnical Engineering | 2021-03-25 | Building and Construction Authority |
| Chin Tam Wan | 2210 | Access Platform Engineering | 2017-04-20 | TW Chin Engineering |
| Chin Tam Wan | 2210 | Lift and Escalator Engineering | 2017-04-20 | TW Chin Engineering |
| Chiong Jeen Ching | 5249 | Geotechnical Engineering | 2025-09-05 | A-Terra Consultants Pte. Ltd. |
| Chong Poh Ting | 4775 | Geotechnical Engineering | 2020-10-15 | AECOM Singapore Pte. Ltd. |