| 2026-10-12 | Taiyo Hisamatsu | St. Pölten II → Central Coast Mariners | Free agent |
| 2026-10-05 | J. Gordon | Colchester → Central Coast Mariners | Free agent |
| 2026-10-04 | R. Abubakar | Mavlon → Central Coast Mariners | - |
| 2026-10-03 | D. Scarlett | Chapelton → Central Coast Mariners | - |
| 2026-09-24 | A. McCalmont | Central Coast Mariners → Gateshead | Free agent |
| 2026-09-16 | Gabriel Tilo | Sydney United → Central Coast Mariners | - |
| 2026-08-13 | S. Rujak | Western Sydney Wanderers → Central Coast Mariners | Free agent |
| 2026-08-07 | A. Edwards | Newtown AFC → Central Coast Mariners | Free agent |
| 2026-07-31 | J. Fordney | Solomon Kings → Central Coast Mariners | Transfer |
| 2026-07-23 | Noah Hooper | Western Sydney Wanderers (U21) → Central Coast Mariners | - |
| 2026-07-20 | A. Reid | Central Coast Mariners → Central Coast Mariners | Transfer |
| 2026-07-19 | A. Bolton | Perth Glory (U21) → Central Coast Mariners | Free agent |
| 2026-07-16 | Luke Becvinovski | Melbourne City → Central Coast Mariners | Transfer |
| 2026-07-09 | K. Popovic | Macarthur → Central Coast Mariners | Free agent |
| 2026-07-06 | A. McCalmont | Central Coast Mariners → McCalmont Alfie | Free agent |
| 2026-07-06 | A. McCalmont | Central Coast Mariners → Gateshead | Free agent |
| 2026-07-06 | M. Naylor | Perth Glory → Central Coast Mariners | Free agent |
| 2026-07-02 | W. Kennedy | Central Coast Mariners → Newcastle Jets | Free agent |
| 2026-07-01 | Noah McCann | QPR → Central Coast Mariners | Free agent |
| 2026-07-01 | B. Tapp | Central Coast Mariners → Johor Darul Takzim FC | Free agent |
| 2026-06-30 | C. Theoharous | Central Coast Mariners → Heidelberg United | Free agent |
| 2026-06-30 | S. Ngor | Central Coast Mariners → Brisbane Roar | Free agent |
| 2026-06-30 | Jacob Nasso | Central Coast Mariners → Brisbane Roar | Free agent |
| 2026-06-30 | N. Blair | Central Coast Mariners → Veres Rivne | Free agent |
| 2026-06-30 | Seth Clark | Central Coast Mariners → Sydney Olympic | - |
| 2026-06-30 | K. Taniguchi | Central Coast Mariners → Mito Hollyhock | Free agent |
| 2026-06-30 | N. Paull | Central Coast Mariners → Macarthur | Free agent |
| 2026-06-30 | O. O'Carroll | Melbourne City → Central Coast Mariners | Transfer |
| 2026-06-29 | Michael Paragalli | Central Coast Mariners → Bulls Academy | - |
| 2026-06-29 | Noah McCann | QPR → Central Coast Mariners | Free agent |
| 2026-06-29 | J. Gordon | Colchester → Central Coast Mariners | Free agent |
| 2026-06-29 | K. Popovic | Macarthur → Central Coast Mariners | Free agent |
| 2026-06-29 | W. Kennedy | Central Coast Mariners → Newcastle Jets | Free agent |
| 2026-06-29 | B. Tapp | Central Coast Mariners → Johor Darul Takzim FC | Free agent |
| 2026-06-29 | J. Donachie | Central Coast Mariners → Donachie James | Free agent |
| 2026-05-30 | L. Sambrook | Central Coast Mariners → Gold Coast United | Free agent |
| 2026-04-05 | J. Mantell | Central Coast Mariners → Central Coast Mariners | Raise |
| 2026-02-09 | N. Duarte | Central Coast Mariners → Heidelberg United | Loan |
| 2026-01-29 | Seth Clark | Sydney Olympic → Central Coast Mariners | Transfer |
| 2026-01-28 | K. Taniguchi | Albirex Niigata → Central Coast Mariners | Transfer |
| 2026-01-26 | R. Edmondson | Central Coast Mariners → St Patrick's Athl. | Free agent |
| 2026-01-26 | Joel Wade | Central Coast Mariners → Marconi Stallions | - |
| 2026-01-20 | A. Pavlesic | Central Coast Mariners → Sydney United | Free agent |
| 2026-01-20 | N. Blair | Perth Glory → Central Coast Mariners | Free agent |
| 2026-01-20 | Alexander Houridis | Central Coast Mariners → Houridis Alexander | Free agent |
| 2026-01-20 | James Houridis | Central Coast Mariners → Houridis James | Free agent |
| 2026-01-15 | C. Donnell | Sydney Olympic → Central Coast Mariners | Free agent |
| 2026-01-13 | A. Auglah | Sydney Olympic → Central Coast Mariners | Transfer |
| 2026-01-12 | N. Blair | Perth Glory → Central Coast Mariners | Free agent |
| 2026-01-10 | O. Lavale | South Melbourne → Central Coast Mariners | Transfer |
| 2026-01-06 | Abdelelah Faisal | Central Coast Mariners → Al-Karma | Free agent |