皇家爱尔兰警队（英语：Royal Irish Constabulary，缩写为RIC），与都柏林大都会警察为二十世纪爱尔兰两大警察部队。德里郡和贝尔法斯特另有自己的部队，但问题不断，特别是卷入教派主义暴力冲突，使其在1870年被解散，由保安队来承担其职责。保安队于1922年解散，被两支新的警察部队——爱尔兰自由邦（现为爱尔兰共和国）的爱尔兰治安卫队，以及北爱尔兰的皇家乌尔斯特保安队——所取代。这支部队大多数由天主教徒组成，虽然高层警官天主教徒较少。保安队的警察系统被作为加拿大西北骑警的范例采用，当时加拿大联邦政府正在西北地区寻求可靠的执法方案。

The Royal Irish Constabulary (RIC, Irish: Constáblacht Ríoga na hÉireann) was the armed police force of the United Kingdom in Ireland from the early nineteenth century until 1922. A separate civic police force, the unarmed Dublin Metropolitan Police controlled the capital, and the cities of Derry and Belfast, originally with their own police forces, later had special divisions within the RIC. About seventy-five percent of the RIC were Roman Catholic and about twenty-five percent were of various Protestant denominations, the Catholics mainly constables and the Protestants officers. The RIC's successful system of policing influenced the armed Canadian North-West Mounted Police (predecessor of the Royal Canadian Mounted Police), the armed Victoria Police force in Australia, and the armed Royal Newfoundland Constabulary in Newfoundland. In consequence of the Anglo-Irish Treaty, the RIC was disbanded in 1922 and was replaced by the Garda Síochána in the Irish Free State and the Royal Ulster Constabulary in Northern Ireland.