The league began in February 2019 and concluded in October 2019.
Shelbourne emerged as champions after beating title rivals Drogheda United 3–1 away from home on 13 September 2019, earning them promotion to the top flight for the first time since 2012.
Each team plays each other three times for a total of 27 matches in the season.
Note: Flags indicate national team as has been defined under FIFA eligibility rules.
Source: SSE Airtricity League of Ireland Cabinteely advances on away goals.