Ulster Rugby (Irish: Rugbaí Ulaidh) is one of the four professional provincial rugby teams from the island of Ireland. They compete in the Pro12 and the European Rugby Champions Cup. The team represents the IRFU Ulster Branch, which is one of the four primary branches of the IRFU and is responsible for rugby union throughout the geographical Irish province of Ulster, comprising six counties in Northern Ireland and three in the Republic of Ireland. Ulster A compete in the British and Irish Cup.