Furs of Valencia (, ) were the laws of the Kingdom of Valencia during most of Middle Ages and Early modern Europe. The laws were a series of charters which, altogether, worked similarly as a modern Constitution does now. Thus, they defined the position, and the checks and balances between the Royal House, the nobility, the Catholic ecclesiastic and the judicial procedures. The first codifications are based in the Usages of Barcelona, Costums of Lleida, and the Furs of Aragon.