1990–91 League of Ireland
|This article does not cite any references or sources. (October 2012)|
Statistics of League of Ireland in the 1990/1991 season.
The Premier Division was contested by 12 teams and Dundalk F.C. won the championship.
The First Division was contested by 10 teams and Drogheda United F.C. won the division.
The season started with the league in its worst position since its foundation, which was compounded by the fact that it was officially the worst league in Europe as it was at the bottom of the UEFA co-efficient rankings after several years of poor performances in Europe. However the league quickly strengthened and steadily built up its co-efficient in the 90s.
Premier Division 
|2||Cork City F.C.||50||19||12||2||45||18||+27|
|3||St Patrick's Athletic F.C.||44||17||10||6||46||21||+25|
|5||Sligo Rovers F.C.||38||13||12||8||34||22||+12|
|6||Shamrock Rovers F.C.||37||14||9||10||51||37||+14|
|7||Derry City F.C.||35||13||9||11||51||28||+23|
|8||Galway United F.C.||23||9||5||19||34||61||-27|
|10||Athlone Town A.F.C.||19||6||7||20||22||53||-31|
|11||Waterford United F.C.||17||6||5||22||22||62||-40||Relegated|
|12||Limerick City F.C.||17||6||5||22||21||73||-52||Relegated|
First Division 
|1||Drogheda United F.C.||41||15||11||1||38||14||+24||Promoted|
|2||Bray Wanderers A.F.C.||38||16||6||5||40||17||+23||Promoted|
|3||Cobh Ramblers F.C.||32||12||8||7||31||20||+11|
|4||Finn Harps F.C.||32||14||4||9||40||30||+10|
|5||St James's Gate F.C.||29||13||3||11||37||38||-1|
|6||University College Dublin A.F.C.||27||11||5||11||32||25||+7|
|7||Kilkenny City A.F.C.||25||7||11||9||29||32||-3|
|8||Home Farm F.C.||17||5||7||15||26||46||-20|
|9||Longford Town F.C.||17||5||7||15||20||44||-24|
|10||Monaghan United F.C.||12||4||4||19||27||54||-27|