Note: Flags indicate national team as has been defined under FIFA eligibility rules.
[3] Following the conclusion of the 2013 First Division season, both Mervue United and Salthill Devon withdrew from the League of Ireland to make way for a new team known as Galway F.C.
received permission from the FAI to enter their reserve team in the First Division for the 2014 season.
[2] Longford Town clinched the title following a resounding 5–0 victory at home to Shamrock Rovers B on 3 October 2014.
Rovers decided it was not financially viable to continue fielding two teams in the League of Ireland.