In this article the author seeks to explain some fundamental features of Roman Catholic spirituality in the Bohemian Lands after the Second World War. He demonstrates that this phenomenon was in essence both determined by the “Roman Catholic Renaissance” of the 1930s and by new tendencies, particularly after the Communist takeover of February 1948. Among these tendencies was its enforced closed nature, fear of persecution, traditionalism, and conservatism, which were mainly the result of the limitations on being in touch with people abroad. On the whole, however, the author believes that Czech Roman Catholicism from the Communist takeover to the collapse of the regime in late 1989, despite all its problems, contributed to Czech culture, and he demonstrates this also in the reception of the Second Vatican Council in Bohemia and Moravia. The spirituality of women, both of nuns and of secular intellectuals, receives special praise in the article.