2024 League of Ireland First Division

The 2024 League of Ireland First Division, known as the SSE Airtricity Men's First Division for sponsorship reasons, is the 40th season of the League of Ireland First Division.

The competition began on 16 February 2024, and is due to conclude in October 2024.

Team changes
The teams relegated to the First Division were Cork City (losers of the 2023 League of Ireland Premier Division play-off) and UCD (the bottom-placed team of the 2023 League of Ireland Premier Division). They replaced the two teams promoted from the 2023 League of Ireland First Division (champions Galway United and Premier Division play-off winners Waterford).

Personnel and kits
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Results
Teams play each other four times (twice at home and twice away).