爱尔兰问题（Irish Question），1800年至1920年间困扰大英帝国的国族问题，最通行定义出自1844年英国议员本杰明·迪斯雷利（后来的英国首相）：「A dense population, in extreme distress, inhabit an island where there is an Established Church, which is not their Church, and a territorial aristocracy the richest of whom l