St James's Church is a Roman Catholic church situated in the centre of the town of Reading in the English county of Berkshire. It is located adjacent to the remaining ruins of Reading Abbey, between the Forbury Gardens and Reading Gaol. St James's Church, along with St William of York's Church, forms a joint parish within the Roman Catholic Diocese of Portsmouth. The current parish priest (since February 2010) is Canon John O'Shea. Sunday masses are well-attended often with standing room only; the parish boasts a large number of nationalities among its regular congregation.