| Poh Chee Xian | 5457 | Electrical | 2022-04-28 | Digital Investment Management Pte. Ltd. |
| Poh Cher Seng | 2460 | Civil | 1989-03-22 | Grace Consutants |
| Poh Hong Cheng John | 3938 | Civil | 2004-12-03 | Gammon Pte Ltd |
| Poh Jen Lim | 4521 | Electrical | 2013-06-13 | Engineering Management Solutions Platform Pte Ltd |
| Poh Joo Ann | 4257 | Electrical | 2007-07-19 | United Project Consultants Pte Ltd |
| Poh Khian Meng | 5043 | Civil | 2018-04-11 | Surbana Jurong Consultants Pte. Ltd. |
| Poh Kong Beng | 1665 | Civil | 1981-08-28 | Marsfield Consultants |
| Poh Seng Tiok | 3928 | Civil | 2004-09-21 | LYL Consultants Pte. Ltd. |
| Poh Teoh Yaw | 3898 | Civil | 2004-06-22 | Building and Construction Authority |
| Poh Thiam Hoe | 3134 | Civil | 1995-05-17 | KKT Consultants Pte. Ltd. |
| Poh Tiong Keng | 3799 | Mechanical | 2003-04-15 | Keppel Ltd. |
| Pok Ming Wee | 3813 | Civil | 2003-05-20 | Executive Decisions Inc. LLP |
| Poland Jacobus Johannes | 3853 | Civil | 2003-10-28 | Poland Civil Engineering |
| Pong Mew Lan Marina | 3253 | Civil | 1996-07-03 | Sembcorp Architects & Engineers Pte. Ltd. |
| Ponnampalam Thusiyanthan | 5160 | Civil | 2018-10-18 | Ronnie & Koh Consultants Pte. Ltd. |
| Praful Jayantilal Desai | 1865 | Mechanical | 1983-01-13 | P J Engineers & Consultants |
| Praveen Kumar Vontivillu Premnath | 5635 | Civil | 2024-04-25 | AECOM Singapore Pte. Ltd. |
| Promvongsanon Napob | 4806 | Civil | 2016-09-22 | Jacobs International Consultants Pte. Ltd. |
| Pua Teck Seng | 3706 | Civil | 2002-05-08 | PTS Consultants |
| Pua Tze Yong | 4764 | Electrical | 2016-04-12 | Bescon Consulting Engineers Pte |
| Pua Weiming Colin | 5515 | Electrical | 2023-02-23 | SP Group |
| Puah Khim Teck | 4173 | Civil | 2007-03-15 | PUB, Singapore's National Water Agency |
| Pui Syn Kong | 2018 | Civil | 1984-01-24 | S K Pui Chartered Consulting Engineers |
| Punithan S/O Shanmugam | 4033 | Civil | 2006-05-16 | Building and Construction Authority |
| Punlop Visudmedanukul | 5493 | Civil | 2022-11-24 | T.Y.Lin International Pte. Ltd. |
| Quah Wee Jin | 2221 | Mechanical | 1986-01-16 | QWJ Engineering & Management Consultants |
| Quah Wei Wen William | 5695 | Civil | 2024-08-23 | JTC Corporation |
| Quan Chee Nurn Kevin | 4102 | Civil | 2007-01-26 | Ground Instrumentation & Engineering Pte. Ltd. |
| Quan Ying Sau | 0417 | Civil | 1972-05-24 | Quan Ying Sau Consulting Engineers |
| Quek Kai Hock Danny | 4338 | Electrical | 2010-02-18 | SP Group |