Enforcement jurisdiction lies at the heart of the international legal order. It is concerned with the power not merely to compel states to act but also to induce their compliance with state laws, or impose a sanction for violation of state laws. This study examines and determines whether there is now a general principle of international law relating to enforcement jurisdiction in respect of international arbitration processes. The author brings to the forefront the compelling insight that national courts exercise their enforcement jurisdiction in the public sphere, thereby contributing to the development of public international law. Focusing on approaches to enforcement jurisdiction shared across four representative states, the analysis compares the relevant case law of the United Kingdom, the United States, France, and Germany.