Arthur Penrhyn Stanley,, known as Dean Stanley, was an English Anglican priest and ecclesiastical historian. He was Dean of Westminster from 1864 to 1881. His position was that of a Broad Churchman and he was the author of a number of works on Church History. He was a co-founder of the Palestine Exploration Fund.

The Dean of Westminster is the head of the chapter at Westminster Abbey. Due to the abbey's status as a royal peculiar, the dean answers directly to the British monarch. Initially, the office was a successor to that of Abbot of Westminster, and was for the first 10 years cathedral dean for the Diocese of Westminster. The current dean is David Hoyle.