This research emphasises the concept of international jurisdiction and its relationship with legislative jurisdiction and the applicable law. International jurisdiction pertains to the authority of a state to regulate and impact individuals, as well as things and situations, in accordance with international law, which is based on the principles of state sovereignty and equality. This study seeks to evaluate how courts analyse their jurisdiction in cases involving foreign elements and the resulting impact on the applicable law. A qualitative approach was used to evaluate the impact of international jurisdiction on the relevant law. The current research is divided into various sections that explore the characteristics of international jurisdiction rules, their autonomy from legislative jurisdiction, and the impact of designating competent courts and applicable laws on international jurisdiction. The findings revealed that national courts have the authority to resolve disputes involving foreign elements in private international relations. The perceived conflicts of laws are primarily attributed to the abundance of laws rather than genuine legal conflicts. The application of rules pertinent to a judge's law is heavily influenced by international jurisdiction, which places a strong emphasis on legislative jurisdiction. Various factors, such as maintaining public order, the impact of external influences, and differences in legal procedures, can affect the implementation of laws from other countries. This research has multiple theoretical and practical implications. This study incorporates the increasing amount of research on the comprehension of jurisdictional frameworks. This study provides a comprehensive analysis of the extent and boundaries of judicial authority, helping individuals and entities gain a clear understanding of their rights and obligations within both local and international legal systems. The study also discusses the limitations of the research and provides insights into future directions.