The Archdeacon of Westminster is a senior ecclesiastical officer within the Chapter of the Royal Peculiar of Westminster Abbey in London. The holder of the post oversees relationships with the twenty-four parishes of which the Dean and Chapter are patrons, and is responsible for the pastoral care of the staff and volunteers of the Abbey. The post is currently held by Tricia Hillas, Canon Steward and Speaker's Chaplain, who took up the position in 2021. The role of archdeacon has previously been held together with other chapter roles, including Sub-Dean, Canon Treasurer and Canon Theologian.