Alan Stephen Williams, SM (born 15 March 1951) is an English Roman Catholic prelate and 7th Bishop of Brentwood.

He made his final vows with Society of Mary (Marists) in 1981 and was ordained priest on 30 April 1983 at St Anne’s, Whitechapel.

Williams was Appointed Director of the Roman Catholic National Shrine at Walsingham in 2008, where he had overall responsibility for pilgrimage and retreat work.

[4] In 2003, in conjunction with the Margaret Beaufort Institute of Theology, Williams invited Roman Catholics who no longer regularly attended church services to get in touch so that he could listen to their perspectives.

The results of his enquiry, researched by Fr Liam Hayes of the Margaret Beaufort Institute, were published in March 2024 under the title "Bishop Alan Listens".