| Yau Tze Yin | 4849 | Civil | 2017-02-16 | JIB Specialist Consultants Pte. Ltd. |
| Yau Yen Nee | 5401 | Civil | 2021-03-25 | Building and Construction Authority |
| Ye Kyaw Aung | 5311 | Mechanical | 2020-02-20 | Synersis Pte. Ltd. |
| Ye Yaosheng | 5252 | Civil | 2019-09-19 | CPG Consultants Pte Ltd |
| Yeang Hoong Goon | 1402 | Mechanical | 1979-12-08 | CPG Consultants Pte Ltd |
| Yee Annie | 4016 | Civil | 2006-01-12 | Building and Construction Authority |
| Yee Kai Wai | 4101 | Civil | 2007-01-26 | AECOM Singapore Pte. Ltd. |
| Yee Kwai Yin Flora | 4682 | Mechanical | 2015-05-19 | Singapore Civil Defence Force |
| Yee Poh Kin | 2135 | Mechanical | 1985-04-16 | MPE Engineering Services |
| Yee Yok Meng | 3257 | Civil | 1996-08-07 | Housing & Development Board |
| Yeo Ann Cheong | 2492 | Mechanical | 1989-06-14 | TUV SUD A-Reliance Pte. Ltd. |
| Yeo Cheng Hee | 4524 | Electrical | 2013-08-23 | Energy Market Authority |
| Yeo Chin Iuan | 2584 | Civil | 1990-08-15 | C I Yeo Consulting Engineer |
| Yeo Chin Yin @ Yeo Ah Kau | 1581 | Electrical | 1981-03-24 | YHC Consultants |
| Yeo Choon Chong | 3050 | Civil | 1994-07-20 | Changi Airport Group (Singapore) Pte. Ltd. |
| Yeo Guek Neo Angela | 2441 | Civil | 1989-01-11 | A Y Consultants |
| Yeo Hong Eng | 3791 | Civil | 2003-02-27 | Steen Consultants Private Limited |
| Yeo Howe Chien | 4547 | Electrical | 2013-10-17 | Vantage Data Centres |
| Yeo Hwai Nien | 4445 | Mechanical | 2012-05-17 | BPV Engineering & Consultancy |
| Yeo Keng Kwee Kenneth | 5367 | Electrical | 2020-11-19 | Land Transport Authority |
| Yeo Keong Wee | 5179 | Electrical | 2018-10-18 | ExxonMobil Asia Pacific Pte. Ltd. |
| Yeo Kheng Hock Alvin | 4226 | Mechanical | 2007-06-14 | AY Safety Consultancy & Inspection Services |
| Yeo Kheng San | 4319 | Electrical | 2009-07-31 | APCP Engineering Services |
| Yeo Kiat Ju | 5361 | Mechanical | 2020-11-19 | Binnies Singapore Pte. Ltd. |
| Yeo Kin Muah | 4265 | Mechanical | 2007-07-19 | WSP Consultancy Pte. Ltd. |
| Yeo Kok Beng | 4551 | Electrical | 2013-10-17 | Ministry Of Transport (MOT) |
| Yeo Kwee Ming | 3873 | Electrical | 2004-03-16 | Wistec Engineers Pte. Ltd. |
| Yeo Lee Shen Shaun | 5049 | Civil | 2018-04-11 | Sembcorp Architects & Engineers Pte. Ltd. |
| Yeo Lily | 3600 | Civil | 2000-11-28 | AGS Consultants Pte. Ltd. |
| Yeo Lock Hoe | 3613 | Civil | 2001-03-20 | Dezignlab Consultants |