| Ong Jing Wen | Multimedia University (MMU) |
| Ong Jing Xun | Universiti Malaya (UM) |
| Ong Johnson | Certificate In Legal Practice (CLP) |
| Ong Jong Yong | Middle Temple |
| Ong Joo Theam | Middle Temple |
| Ong June Siang | Certificate In Legal Practice (CLP) |
| Ong Kah Guan | Gray's Inn |
| Ong Kah Lok | Multimedia University (MMU) |
| Ong Kah Qin | Certificate In Legal Practice (CLP) |
| Ong Kai Rou | Certificate In Legal Practice (CLP) |
| Ong Kai Wei | Certificate In Legal Practice (CLP) |
| Ong Kam Seng | Certificate In Legal Practice (CLP) |
| Ong Kang Nyong | Universiti Malaya (UM) |
| Ong Kar Boon | Universiti Utara Malaysia (UUM) |
| Ong Kar Rin | Middle Temple |
| Ong Kar Voi | Certificate In Legal Practice (CLP) |
| Ong Kar Yee | Certificate In Legal Practice (CLP) |
| Ong Kay Sung | Certificate In Legal Practice (CLP) |
| Ong Kean Peng | Certificate In Legal Practice (CLP) |
| Ong Keh Keong | International Islamic University (IIU) |