The 2023 League of Ireland First Division season is the 39th season of the League of Ireland First Division, the second tier of the Republic of Ireland's association football league.

Overview
The First Division has 10 teams. Each side plays each other four times for a total of 36 matches in the season. The team that finishes in first place achieve automatic promotion to the Premier Division. Teams finishing second to fifth place will enter the play-offs to determine the side to contest for a place in the 2024 Premier Division against the ninth placed (second last) Premier Division team.

Teams

Team changes
Cork City were promoted to the Premier League as champions. Finn Harps were relegated from the 2022 Premier Division.

Additional teams
Newly formed Kerry F.C. successfully applied for a First Division licence to compete in the 2023 season.

Stadia and locations

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.

Managerial changes

League table

Season statistics

Top scorers

See also
 2023 League of Ireland Premier Division
 2023 FAI Cup

References

League of Ireland First Division seasons
2023 League of Ireland
2
Ireland
Ireland