Ko Man Jeff
7th Dan
| Kukkiwon • World Taekwondo Academy | 3rd Class, International Taekwondo Master |
| Asian Taekwondo Union | Kyorugi Coach |
| Asian Taekwondo Union | Poomsae Coach |
| Global Para-Taekwondo University | Para-Taekwondo Instructor |
| World Taekwondo | 3rd Class, International Kyorugi Referee |
| World Taekwondo | 3rd Class, International Poomsae Referee |
| Kukkiwon • World Taekwondo Academy | Poomsae Training Course Certificate |
