Saul Monastery is a former Christian monastery located in County Down, Northern Ireland. It is traditionally associated with the 5th-century Saint Patrick, who is said to have founded it shortly after arriving in Ireland, and having died there at the end of his missionary work.

Saint Patrick was a fifth-century Romano-British Christian missionary and bishop in Ireland. Known as the "Apostle of Ireland", he is the primary patron saint of Ireland, the other patron saints being Brigid of Kildare and Columba. Patrick was never formally canonised, having lived before the current laws of the Catholic Church in such matters. Nevertheless, he is venerated as a saint in the Catholic Church, the Lutheran Church, the Church of Ireland, and in the Eastern Orthodox Church, where he is regarded as equal-to-the-apostles and Enlightener of Ireland.