The 2003 League of Ireland Premier Division was the 19th season of the League of Ireland Premier Division.
The division was made up of 10 teams.
[2][3][4] Source:[2][4] Four teams entered the promotion/relegation play-off.
The second, third and fourth placed teams from the 2003 League of Ireland First Division were joined by the ninth placed team from the Premier Division.
Derry City win 4–0 on aggregate Finn Harps win 3–1 on aggregate Derry City win 2–1 on aggregate and retain their place in the Premier Division.