The 2018 All-Ireland Minor Football Championship was the GAA's premier inter-county gaelic football competition for under 17s. Thirty one county teams from Ireland competed (Kilkenny did not participate). 2018 was the first minor competition for under 17 year-olds – previously the competition had an under 18 age limit. The under 17 championship with a new format was introduced after a vote at the GAA congress on 26 February 2016. A league format was introduced in Connacht and Leinster. Munster retained their double elimination format and Ulster changed to a double elimination format.