[3] Cork City won the title for the third time.
They replaced the two teams promoted from the 2023 League of Ireland First Division (champions Galway United and Premier Division play-off winners Waterford).
Note: Flags indicate national team as has been defined under FIFA eligibility rules.
The ninth-placed team (Drogheda United) from the 2024 League of Ireland Premier Division qualified for a play-off alongside the second, third, fourth, and fifth-placed teams from the 2024 League of Ireland First Division (Athlone Town, Bray Wanderers, UCD, and Wexford).
The semi-final winners then contest the First Division final, with the winners ultimately facing the ninth-placed League of Ireland Premier Division team for the final place in the 2025 League of Ireland Premier Division.