Cathal Heffernan
| Date of birth | 27 April 2005 |
| Place of birth | Cork |
| Nationality | Irish |
| Height | 1.88 m |
| Position | Defender |
Cathal Heffernan played for Ringmahon Rangers during his youth career.
Club history
| Team | Joined | Left | Loan / Trialist |
|---|---|---|---|
| Cork City | 16 Jun 2021 | 20 Jun 2022 | |
| AC Milan | 31 Jan 2022 | 31 May 2022 | L |
| AC Milan | 20 Jun 2022 | 30 Jun 2023 | |
| Newcastle United | 24 Aug 2023 | 15 Jan 2026 |