| Martin Frederick | |
| Fullname: | Manguru Frederick |
| Birth Date: | 17 May 2000 |
| Birth Place: | Adelaide, South Australia [1] |
| Originalteam: | , SANFL |
| Draftpick: | Category B Rookie selection, 2018 national draft |
| Height: | 178 cm |
| Weight: | 80 kg |
| Position: | Defender |
| Guernsey: | 45 |
| Years1: | 2021–2022 |
| Games Goals1: | 14 (2) |
| Years2: | 2023 |
| Games Goals2: | 22 (5) |
| Years3: | 2024– |
| Games Goals3: | 14 (3) |
| Statsend: | round 17, 2024 |
Manguru "Martin" Frederick (born 17 May 2000) is an Australian rules footballer of Sudanese descent who played for Port Adelaide in the Australian Football League (AFL).[2]
He made his AFL debut in Round 6 of the 2021 AFL season against at Adelaide Oval. Delisted by Port Adelaide in 2022, played for Sturt in the South Australian National Football League in 2023. He currently plays for Claremont in the West Australian Football League.
He is the twin brother of Minairo "Michael" Frederick, who plays for .[3]