Ireland's two biggest universities fail to rate among the world's top 100 for teaching and research in the view of international academics.
They are, however, among the top 26 in Europe, according to the latest global league table.
Trinity College Dublin (TCD) is placed 14th in Europe, while University College Dublin (UCD) is ranked 26th, in a new rankings published by the London-based 'Times Higher Education' (THE) magazine.
The new World Reputation Rankings are based on the universities' standing among experienced academics and do not take into account other criteria usually used for such tables.
The tables are dominated by US universities, accounting for 45 of the global top 100, followed by the UK, with 10, while Japan beats Canada, Australia and Germany.