The Admiral William Brown Cup (in Spanish: Copa Almirante Brown) is an international rugby union competition contested between Argentina and Ireland.

It was first held on 16 November 2012 at the Aviva Stadium.

[1] The trophy is named after Admiral William Brown, the Irish-Argentine born in Foxford, Co Mayo in 1777, who founded the Argentine Navy.

[1][2][3] This competition was born after a joint initiative involving the Embassy of Argentina in Dublin, the Embassy of Ireland in Buenos Aires, the Argentine Rugby Union and the Irish Rugby Football Union.

[4][5] Note: Date shown in brackets indicates when the record was or last set.