The promoted team was Cork City, after a top flight absence of two years.
[3] They replaced Finn Harps who were relegated after four consecutive seasons in the top flight.
[4] Shamrock Rovers were the defending champions, having won their twentieth title the previous season.
[5][6] Note: Flags indicate national team as has been defined under FIFA eligibility rules.
The quarter-final winners then contested the semi-finals, with the winners ultimately facing the ninth-placed League of Ireland Premier Division team for the final place in the 2024 League of Ireland Premier Division.