Abuse of Rights in International Arbitration introduces the principle of abuse of rights and considers its application as a general principle of law to prevent different forms of substantive and procedural abuse in international arbitration. The virtue of a single theory with a wide scope and an overarching premise is that it is a principle, which involves equity considerations, enjoys the flexibility of general principles of law, and can address different abusive behaviours. The author carefully examines the legal basis and core elements of abuse of rights and analyses the relevant case law to address how the principle may affect the administration of arbitral justice. Arguing for the application of abuse of rights as a general principle of law, the author expertly examines how it could apply in both international commercial and investment arbitration to tackle procedural misconduct and different abusive practices.