Association of Catholic Clergy Pacem in Terris

Association of Catholic Clergy Pacem in Terris (Czech: Sdružení katolických duchovních Pacem in terris, Slovak: Združenie katolíckych duchovných Pacem in terris), abbreviated SKD PiT or simply PiT, was a regime-sponsored organisation of Catholic clergy in Communist Czechoslovakia between 1971 and 1989. Its name was taken from the well-known encyclical Pacem in terris of the reform Pope John XXIII.

SKD PiT was registered on August 1, 1971, and its stated purposes were 'peace in the world' and 'friendship between nations'. But in fact its raison d'etre was rather to control and spy the clergy and influence the life of the whole church. Its founding assembly was held in Prague on August 31, 1971.

In the 1970s, its role in the Czech and Slovak Catholic church was not endangered by the official leadership of the church, who did not approve of the Association but could do almost nothing to prevent its actions. The situation changed slowly after the new Pope John Paul II from a communist country was elected in 1978 and adopted a more principled course against communists. The most important papal document here is Quidam episcopi from 1982, prohibiting membership in political organizations to priests.

The Prague archbishop František Tomášek followed the pope and prohibited membership in SKD PiT to his priests. SKD PiT started to weaken in the 1980s and collapsed immediately after the Velvet Revolution in November 1989. The official dismantling of the organization was dated December 7 and it was announced at December 11, 1989, to Tomášek.