This volume examines the jurisdiction, both contentious and advisory, of the ICJ as a specific permanent international court or tribunal but also brings together in one book the examination of the jurisdiction of certain other tribunals, not excluding most of the other four tribunals or groups of tribunals examined in Jurisdiction of International Tribunals by the same author. Material relating to them is expanded, re-examined and brought up to date. Hence, This volume covers the jurisdiction of: (i) the World Court, i.e., the ICJ and PCIJ — both contentious and advisory jurisdiction, (ii) the leading International Administrative Tribunals, (iii) the ECHR, (iv) ICSID tribunals, (v) the WTO Panels and Appellate Body, and (vi) the ITLOS. The six systems for the judicial settlement of disputes chosen to be examined in this work are by far the most important in the modern era and deserve close attention.