Leinster League Division One, as the name implies, is the first division of the Leinster League and started in the 1994/95 season.
Contents
Suttonians, Co. Carlow, Arklow, Mullingar, Garda, Navan, Naas, Wexford Wanderers, Portlaoise, Dundalk and Enniscorthy entered the division through the qualifying matches in the 1993/1994 season.
The number of teams in the division was reduced from 14 to 12 in the 2007/08 season, but this was reversed in the 2008/09 season.
2008/2009 Season
2007/2008 Season
At the end of the season, Ashbourne were relegated to Division Two and Enniscorthy, Newbridge and Tullow were promoted, making it 14 teams once again for 2008/2009.
2006/2007 Season
At the end of the season, Mullingar, Enniscorthy and Kilkenny were relegated to Division Two and Ashbourne and Wicklow were promoted. Naas won promotion to AIB Division Three.