An Ríoghacht (Irish for "The Kingdom", AKA the League of the Kingship of Christ) was a conservative Catholic group in Ireland, founded in 1926 by Fr Edward Cahill, Professor of Church History and Lecturer in Sociology at the Milltown Park Institute, Dublin.
The group was established in mid 1926, with Cahill writing to Archbishop Edward Joseph Byrne in October 1926 to inform him that his organisation had been in existence for some months and to announce the formation of a Provisional Committee featuring Sir Joseph Glynn, George Gavan Duffy, prominent judge Michael J. Lennon, J. Durnin, the lawyer Patrick Waldron and three priests. The new organisation attracted some prominent members, including the economist Berthon Waters, the publisher Eoin O'Keefe, Peter O'Loghlen TD, Gabriel Fallon a critic and Maurice Moynihan and O.J. Redmond, two senior members of the civil service. At lower levels the organisation established branches across Ireland, with six branches established in Dublin, two each in Cork and Kilkenny and one each in Waterford, Mullingar, Nenagh and Bray.
The organisation had several hundred members at any given time although it did not retain membership, rather instructing those who joined in the intricacies of Catholic social teaching, before encouraging them to go off and spread what they had learned either independently or as members of other more community-based Catholic societies. Between 1935 and 1939 the group ran high profile Summer Schools to promote their aims and teachings. It did not however seek a mass membership, preferring an elitist structure and seeking to attract only those in positions of influence to its ranks.
The object of this society was to ensure the use of Catholic Social Teaching, and embed Catholic doctrine in the legal structure, in the Irish Free State. Fr Cahill viewed with great apprehension the power of international Freemasonry, Communism and Jewry. The society organised public meetings three or four times a year, published pamphlets on current topics and attempted to produce a weekly paper to further its ideals.