A charity set up to raise funds for NUI Galway spent more than 30-thousand euro on 102 taxi trips over a three year period.
The Galway University Foundation also spent over 48-thousand euro on business class flights between 2015 and 2017.
Other expenses include four and five star hotels in cities such as New York, Singapore, Beijing and Toronto.
The Charities Regulatory Authority launched an investigation due to concerns about the use of funds for travel and hospitality.
In response, Galway University Foundation said it welcomed the report, it had fully addressed the areas for improvement raised by the inspector and would provide the Charities Regulator with an update on the matters raised in the report.
It added that average administrative expenditure as a percentage of total income was 15pc and well below both national and international comparators.
The Foundation is a registered charity set up to raise philanthropic funds for the development of NUI Galway - both from a strategic and an academic perspective - and has raised over €200 million to date.