The Constitutions of Clarendon were a set of legislative procedures passed by Henry II of England in 1165. The Constitutions were composed of 16 articles and represent an attempt to restrict ecclesiastical privileges and curb the power of the Church courts and the extent of Papal authority in England. In the anarchic conditions of Henry II's predecessor, Stephen, the church had extended its jurisdiction by taking advantage of the weakness of royal authority. The Constitutions were claimed to restore the judicial customs observed during the reign of Henry I (1100–35), while in fact they were a part of Henry II's larger expansion of royal jurisdiction into the Church and civil law, which was a defining aspect of his reign.
The Constitutions take their name from Clarendon Palace, Wiltshire, the royal hunting lodge at which they were promulgated.