1575 in Ireland

• Monarch: Elizabeth I

• Walter Devereux, Earl of Essex, has members of the clan O'Neill killed at Banbridge.
• March 16 – Edmund O'Donnell is hanged, drawn and quartered in Cork as a traitor, the first Jesuit executed by the English government.
• May–August – drought.Annals of the Four Masters.
• May 22 – Elizabeth I of England orders Essex to break off his enterprise of the plantation of Antrim.{{cite book|editor=Moody, T. W.|title=A New History of Ireland. 8: A Chronology of Irish History|publisher=Oxford University Press|year=1989|isbn=978-0-19-821744-2|display-editors=etal}} He will return to England at the end of the year.
• June – Essex builds a bridge and fort at Blackwater (north of Armagh).
• June 27 – Turlough Luineach O'Neill submits to the English authorities and receives extensive grants of lands and permission to employ 300 Scottish mercenaries.
• July 20–26 – Rathlin Island Massacre: English adventurers Francis Drake and John Norreys, acting for the Earl of Essex, lead an expedition that culminates in the massacre of 500 of the clan MacDonnell in a surprise raid on Rathlin Island.{{cite web|first=Harry|last=Kelsey|url=http://www.oxforddnb.com/view/article/8022|title=Drake, Sir Francis (1540–1596)|work=Oxford Dictionary of National Biography|publisher=Oxford University Press|date=September 2004|edition=Online, May 2007|access-date=2012-12-20}} {{ODNBsub}}
• August–September – Plague in Leinster.
• August 5 – Sir Henry Sidney is reappointed Lord Deputy of Ireland{{cite book|last=Wagner|first=John|title=Historical Dictionary of the Elizabethan World: Britain, Ireland, Europe, and America|location=Phoenix|publisher=Oryx|year=1999|isbn=1573562009|page=[https://archive.org/details/historicaldictio0000wagn/page/278 278]|url=https://archive.org/details/historicaldictio0000wagn/page/278}} following the resignation of Sir William FitzWilliam.

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• March 16 – Edmund O'Donnell, Jesuit (b. 1542)
• November 27 – Sir Peter Carew, English adventurer in Ireland (b. 1514?)
• Christopher Barnewall, statesman (b. 1522){{cite book|last1=Kinney|first1=A.|last2=Lawson|first2=J.|title=Titled Elizabethans: A Directory of Elizabethan Court, State, and Church Officers, 1558–1603|date=2014|publisher=Springer|isbn=9781137461483|page=1644|url=https://books.google.com/books?id=6xe-BQAAQBAJ&pg=PA1644|language=en}}

• Approximate date – the manuscript now known as Royal Irish Academy, MS 23 N 10 is copied at Ballycumin, County Roscommon, by Aodh, Dubhthach and Torna of the Ó Maolconaire family.

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Category:1570s in Ireland

Category:Years of the 16th century in Ireland

{{Years in Ireland}}

{{Year in Europe|1575}}