Timeline of Irish history
This is a timeline of Irish history, comprising important legal and territorial changes and political events in Ireland. To read about the background to these events, see History of Ireland. See also the list of Lords and Kings of Ireland, alongside Irish heads of state, and the list of years in Ireland.
Prehistory / centuries: 1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th15th16th17th18th19th20th21st
[|2nd] century
[|6th] century
[|9th] century
| Year | Date | Event |
| 830 | Óengus of Tallaght writes the Martyrology of Tallaght, the Prologue of which speaks of the last vestiges of paganism in Ireland | |
| 852 | Vikings Ivar Beinlaus and Olaf the White land in Dublin Bay, and establish a fortress close to where the city of Dublin now stands |
[|10th] century
| Year | Date | Event |
| 980 | The King of Dublin Olaf Cuaran abdicates following defeat at the Battle of Tara to Máel Sechnaill mac Domnaill. | |
| 988–989 | Máel Sechnaill demands "tribute" by the Vikings at Dublin |