- The PCIJ was the first international court ever established with jurisdiction over a broad range of matters including territorial disputes, human rights violations, and breaches of international law.
- It contributed significantly to the development of international law.
- Established a precedent for the peaceful resolution of disputes without war or other forms of violence.
- After WWII many of its functions and jurisdictions were taken over by the International Court of Justice (ICJ), the principal judicial organ of the United Nations.