A History of Ireland in 100 Objects was a joint project by The Irish Times, the National Museum of Ireland, and the Royal Irish Academy to define one hundred archaeological or cultural objects that are important in the history of Ireland. The objects are single man-made artefacts or documents, excluding buildings, ranging in date from about 5,000 BC (Mesolithic) to the early 21st century. Most of the objects are held in accessible collections in the Republic of Ireland or Northern Ireland.