The general principles of law, which gain meaning with their contribution to proper continuation of social relations in a constitutional state, constitute a body of rules that serve the purpose of seĴ ing forth the necessities of coexistence and that are recognized as a result of social consensus. In the administrative law, which is a case law, the meaning and importance of the general principles of law should not be ignored. In fact, the general principles of law are the sources of reference frequently used by administrative jurisdictions for seĴ lement of disputes. The general principles of law governing the administrative law include the principle of administrative stability. The principle of administrative stability has signifi cant eff ects and consequences both on the protection of legal situations that arise for the benefi t of individuals and on the continuous and regular execution of public services. Besides, the principle of administrative stability is a valuable reference for administrative jurisdiction law. This study examines the eff ects of the principle of administrative stability on the rules and institutions of administrative jurisdiction law in the light of judicial decisions.