O'Toole Park is a Dublin GAA

Dublin GAA

Dublin County Board of the Gaelic Athletic Association , or Dublin GAA, is one of the 32 county boards of the GAA in Ireland, and is responsible for Gaelic games in County Dublin. The county board is also responsible for the Dublin inter-county teams...

 venue for games during the Dublin Senior Football and Hurling Championships. It also hosts Dublin Intermediate and Junior county finals. It is the former home to the Dublin football and hurling teams in the NFL and NHL respectively, before the Dublin County Board redeveloped Parnell Park.