Welcome to the International Supreme Court of Justice

The International Supreme Court of Justice (ISCJ) is an international judicial institution operating within its own constitutional and legislative framework. It is established to support the principled application of international law through impartial adjudication, procedural integrity, and reasoned decision-making where jurisdiction is lawfully conferred.

The ISCJ does not claim universal or compulsory jurisdiction and does not replace or supersede existing international or domestic courts. Its mandate is confined to the scope expressly provided under its governing instruments and applicable authorisations

Jurisdiction and Mandate

The mandate of the ISCJ is to provide an institutional forum for the consideration of international legal matters within its framework, subject to jurisdictional and admissibility requirements.

The Court’s jurisdiction arises only where a lawful legal basis exists, including consent, authorisation, or applicable institutional instruments. Matters falling outside these limits are not admitted.

Core Areas of Jurisdiction (Indicative)

Where jurisdiction is properly established, the ISCJ may consider matters involving, by way of example:

  • Disputes involving international legal obligations
    Including treaty interpretation, application of international agreements, and questions of public international law.
  • Institutional or administrative review
    Allegations of serious procedural irregularity, abuse of process, or non-compliance with internationally recognised legal standards, where review is authorised.
  • Human rights–related legal questions
    Consideration of issues arising under international human rights instruments, subject to jurisdictional limits and without displacing specialised human rights courts.
  • Trade, economic, and environmental matters
    Legal questions involving international trade, environmental obligations, or cross-border economic activity, where such matters fall within the ISCJ’s authorised scope.
  • Customary international law
    Interpretation and application of customary international law where relevant and admissible.

The ISCJ does not exercise automatic criminal jurisdiction over individuals and does not replace international criminal tribunals or domestic criminal courts.

Governing Framework, the International Constitution

The ISCJ operates pursuant to its foundational constitutional and legislative instruments, which establish:

  • the institutional role of the Court
  • jurisdictional and admissibility criteria
  • procedural standards and safeguards
  • guarantees of judicial independence and impartiality

These instruments define the limits and conditions under which the Court may act.

Key Principles

  • Independence and Impartiality
    Judges act independently and are bound solely by law and evidence.
  • Jurisdiction by Authorisation
    No matter is considered without a lawful jurisdictional basis.
  • Procedural Fairness
    Proceedings adhere to due process, equality of arms, and reasoned decision-making.
  • Complementarity
    The ISCJ operates alongside existing international and domestic courts and does not assert hierarchical authority over them

Proposed Legislative Instruments and Reforms

From time to time, draft legislative instruments and policy proposals may be developed within the International Parliament initiative to explore potential reforms or institutional developments.

Such proposals:

  • are not self-executing
  • do not create jurisdiction or authority unless formally adopted
  • are published for transparency and public consideration

Engagement with the ISCJ

Engagement with the ISCJ may occur only in accordance with its procedural rules and jurisdictional requirements. States, institutions, or other authorised parties may seek consideration of matters only where standing and jurisdiction are established.

The Court does not accept matters outside its lawful mandate.

Our Mission

The mission of the International Supreme Court of Justice is to contribute to clarity, consistency, and integrity in international legal processes, while respecting the diversity of legal systems and the existing international judicial order.

The exercise of any jurisdiction by the ISCJ remains strictly confined to the scope expressly conferred under applicable international or institutional instruments.