| Ong Swee Kin Maureen | Certificate In Legal Practice (CLP) |
| Ong Swee Lee | National University Of Singapore |
| Ong Swee Long | Universiti Malaya (UM) |
| Ong Ta Khing | Multimedia University (MMU) |
| Ong Teck Lee | Multimedia University (MMU) |
| Ong Teng Hock | Middle Temple |
| Ong Teng Kek, Paul | Lincoln's Inn |
| Ong Teong Ling | University Of Sydney |
| Ong Theng Soon | Lincoln's Inn |
| Ong Tong Lam | Bond University, Queensland |
| Ong Tze Xian | Certificate In Legal Practice (CLP) |
| Ong Voon How | Universiti Malaya (UM) |
| Ong Wei Hern | Certificate In Legal Practice (CLP) |
| Ong Wei Jie | Certificate In Legal Practice (CLP) |
| Ong Wei Lin | Certificate In Legal Practice (CLP) |
| Ong Wei Thinn | Middle Temple |
| Ong Wen Kai | Certificate In Legal Practice (CLP) |
| Ong Wen Li | Universiti Kebangsaan Malaysia (UKM) |
| Ong Wen Nee | Certificate In Legal Practice (CLP) |
| Ong Wen Yee | Certificate In Legal Practice (CLP) |