University Hospital Galway spent more than €8.5m on security over the past two years.
The figure comes amid growing concerns over anti-social behaviour and violence in healthcare institutions.
Six of the country's biggest hospitals, including UHG, spent over 42 million euro on security over the past two years.
St James’s Hospital in Dublin had the highest recorded security spend at almost €11 million across 2024 and 2025.
That was followed by Cork University Hospital, who spent almost €9.3 million, and University Hospital Galway, who recorded security costs of around €8.5 million.
The figures come as anti-social behaviour and violence in healthcare institutes is increasing, with hospitals such as the Mater in Dublin recently asking Gardaí to carry out more patrols around its grounds due to a rise in violence and criminal behaviour.
St. James's alone made almost 230 calls to Gardaí over the last two years, with St. Vincent's following behind at 165.
