This is the latest edition of the late J M Kelly's seminal work, recognised as the authoritative and definitive commentary on our fundamental law, providing a detailed guide to the structure of the Irish Constitution. Each Article is set out in full, in English and Irish, and examined in detail, with reference to all the leading Irish and international case law. Key features in this fourth edition include marginal notes which make it easier to use plus a greatly expanded commentary. Essential reading for all who require knowledge of the Irish legal system and will prove a vital resource to legal professionals, students and scholars of constitutional and comparative law.