The Double (Gaelic games)

The Double is a term in Gaelic games that refers to a county winning the All-Ireland Senior Football Championship and the All-Ireland Senior Hurling Championship in the same year. Other major trophies won in combination in the same year at minor or under-21 levels are also often referred to as doubles. Similarly, the winning of the All-Ireland and the National League titles in the same year may also be referred to as the Double, albeit an inferior one.

Historically it has been unusual for counties to be strong in both codes simultaneously. Indeed, historically many counties have tended to favour one code over the other long term. Dublin and Kerry, for example, have historically dominated football, but been weaker in hurling, while Kilkenny and Limerick are powerful in hurling, but much weaker in football. Only two counties have achieved this rare distinction at Senior level, both on two separate occasions; only Cork have done so in recent times, although Galway and Offaly have both come within a single win on one occasion:

An All-Ireland, national league double involves winning both trophies in either sports code, rather than winning trophies in different codes. As might be expected, this is a much more common double.

A great many sides over the years have come close to winning the coveted senior double but narrowly failed to do so by losing one or both of the championships at the end of the season.

The full list of these teams:

...
Wikipedia