All-Ireland Under-20 B Football Championship

The GAA Football All-Ireland Under-20 B Championship is an annual inter-county Gaelic football competition organised by the Gaelic Athletic Association (GAA). It is the second tier inter-county Gaelic football competition for male players between the ages of 17 and 20 in Ireland.

Teams that are eliminated from the early provincial stages of the GAA Football All-Ireland Under-20 Championship qualify for this championship. Four teams currently participate.

The final serves as the culmination of a series of games played during the spring months, and the results determine which team receives the cup. The All-Ireland Championship is played on a straight knockout basis whereby once a team loses they are eliminated from the championship.

The All-Ireland Under-20 Football Championship was created in 1964 in response to a Congress motion put forward by the Kerry County Board.^[1] Various formats were used in the provincial competitions, however, the All-Ireland series was confined to the four provincial champions. A restructuring of the various provincial championships in 2024 resulted in the creation of Tier 2 competitions for teams who failed to make the latter stages of their provincial series.^[2][3][4][5] The four respective provincial Tier 2 champions qualify for the Tier 2 All-Ireland series of games.

There are four teams in the All-Ireland Championship. During the course of a championship season three games are played comprising two semi-finals and a final. The championship is played as a single-elimination tournament. Each game is played as a single leg.

County	Title(s)	Runners-up	Winning years	Losing years
Down	1	0	2024	—
Westmeath	0	1	—	2024

Province	Winners	Runners-up	Total
Ulster	1	0	1
Leinster	0	1	1

• All-Ireland Under-20 Football Championship

• Official GAA website