2000–01 Irish League

The 2000–01 Irish League was the 100th edition of the Irish League, the highest level of league competition in Northern Irish football. The league consisted of 10 teams, and Linfield won the championship.

Promotion/relegation play-off
Crusaders, who finished in the relegation play-off place, faced Lisburn Distillery, the 2nd-placed team in the First Division, in a two-legged tie for a place in next season's Irish League Premier Division.

Crusaders won 4–3 on aggregate