| Yeo Pao Seng | 5535 | Mechanical | 2023-04-27 | Keppel Seghers Pte Ltd |
| Yeo Peng Yam Philip | 3441 | Civil | 1998-11-17 | Span Consultants |
| Yeo Poh Hwa | 4684 | Civil | 2015-05-19 | Ministry of Manpower |
| Yeo Ren Lih | 4359 | Electrical | 2010-06-17 | ExxonMobil Asia Pacific Pte. Ltd. |
| Yeo Seng Chuang | 3681 | Mechanical | 2001-11-20 | CH2M Hill Singapore Private Limited |
| Yeo Seow Bon | 3886 | Civil | 2004-05-05 | KK Lim & Associates Pte. Ltd. |
| Yeo Ser Chong | 4566 | Mechanical | 2013-10-17 | Beca Carter Hollings & Ferner (S.E.Asia) Pte Ltd |
| Yeo Siang Thong | 3066 | Civil | 1994-10-19 | Chip Eng Seng Contractors (1988) Pte Ltd |
| Yeo Soon Hong | 2482 | Electrical | 1989-05-17 | - |
| Yeo Swee Khiank | 3671 | Mechanical | 2001-10-16 | SP PowerGrid Limited |
| Yeo Tat Soon | 3373 | Electrical | 1997-11-18 | National University Of Singapore |
| Yeo Tiong Lai | 3467 | Electrical | 1999-04-20 | T Yeo Engineers Pte Ltd |
| Yeo Tze Yee | 3988 | Civil | 2005-07-19 | XT3 Consultants |
| Yeo Wee Kok | 5794 | Mechanical | 2025-09-05 | Land Transport Authority |
| Yeo Wei Jie | 5648 | Mechanical | 2024-06-27 | Housing & Development Board |
| Yeo Yee Ngee | 4402 | Electrical | 2011-07-22 | Defence Science and Technology Agency |
| Yeoh Boon Kang | 3198 | Civil | 1996-02-14 | BK Consulting Engineers Pte. Ltd. |
| Yeoh Kiang Meng | 3511 | Civil | 1999-09-21 | KM Yeoh Engineering Consultants |
| Yeoh Kim Siew | 3240 | Civil | 1996-06-14 | ABL Consultants Pte. Ltd. |
| Yeoh Soon Guan | 5171 | Mechanical | 2018-10-18 | DSCO Group Pte. Ltd. |
| Yeong Chark Sung | 3985 | Mechanical | 2005-07-19 | AKC Engineering Inspection Services |
| Yeow Mei Leng | 3159 | Mechanical | 1995-08-16 | Arup Singapore Private Limited |
| Yeow Shih Chi | 1698 | Electrical | 1981-10-27 | Jishi Engineering Trading |
| Yet Nai Song | 3565 | Civil | 2000-07-18 | Building and Construction Authority |
| Yeung Ho Lin Steve | 3814 | Civil | 2003-05-20 | - |
| Yew Wei Hoe | 5495 | Civil | 2022-11-24 | - |
| Yi Bo | 4416 | Civil | 2011-10-20 | PYB International Consultant |
| Yien Yew Sin | 1258 | Civil | 1977-05-19 | TERS Consulting Pte. Ltd. |
| Yim Yuen Soon | 0757 | Electrical | 1973-09-20 | - |
| Yin Li | 4383 | Civil | 2011-01-19 | China Construction (South Pacific) Development Co Pte Ltd |