The Matrimonial Causes Act 1857 was an Act of the Parliament of the United Kingdom. The Act reformed the law on divorce, moving litigation from the jurisdiction of the ecclesiastical courts to the civil courts, establishing a model of marriage based on contract rather than sacrament and widening the availability of divorce beyond those who could afford to bring proceedings for annulment or to promote a private Bill. It was one of the Matrimonial Causes Acts 1857 to 1878.