Hibernia is the Classical Latin name for Ireland. The name Hibernia was taken from Greek geographical accounts. During his exploration of northwest Europe, Pytheas of Massalia called the island Iérnē. In his book Geographia, Claudius Ptolemaeus ("Ptolemy") called the island Iouerníā. The Roman historian Tacitus, in his book Agricola, uses the name Hibernia.

Ireland is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest in the world.