The Roman Catholic Church is the cornerstone and the foundation of the Roman Catholic religion. Both the Republic of Ireland and Northern Ireland have a prevalence of Catholics, as they are called for short.

The leader of the Roman Catholic followers is the Pope, with its seat in Vatican City. This religious denomination has around 1.27 billion followers worldwide. Vatican City, an enclave within the city of Rome, Italy, is the smallest sovereign state in the world, and the center of the Catholic Church – the one and only true Church of Jesus Christ, according to doctrine.

Christianity in Dublin is no different than what it is throughout the rest of Ireland or in fact how the concepts of Christianity are carried out in other parts of the world that follows this faith. Is it accepted that Christianity has the foundation of teachings that are based on the belief of Jesus Christ as being the son of God and the savior of all human beings.