First millennium B.C. in Ireland

Events from the first millennium BC in Ireland.

Events

 * 465 BC – Destruction by fire of later structure at Emain Macha, according to radiocarbon dating.
 * 450 BC – Pseudo-historical date for foundation of Emain Macha as capital of Ulaid kingdom, according to 12th century text of Leabhar Gabala.
 * 392 BC–201 BC – Murder of Clonycavan Man, according to radiocarbon dating
 * 362 BC–175 BC – Murder date of Old Croghan Man, according to radiocarbon dating
 * 307 BC – Pseudo-historical date for foundation of Emain Macha as capital of Ulaid kingdom, according to 8th century Irish World Chronicle, Pseudo-historical date for destruction of Dind Rig and foundation of kingdom of Leinster, according to Leabhar Gabala; dated to 300 BC by Orthanach ua Caellama Cuirrig (d.840).
 * 300 BC – Earliest La Tène influences reach Ireland through trade with, and possible migration from, the continent.
 * 200 BC – Bronze and iron being used at a crannog at Rathtinaun, Lough Gara, County Sligo, sculptures being made in stone and wood, creation of the Turoe stone, Bullaun, County Galway.