University Hospital Galway is the third most overcrowded hospital in the country today, with almost 60 patients without beds.
There were 46 people admitted to the emergency department at UHG waiting on trolleys this morning.
INMO figures show that another 12 people in the hospital were on trolleys in the wards.
At Portiuncula Hospital in Ballinasloe, there are a further 15 patients for whom no beds are available today.
The emergency department at Portiuncula has nine patients on trolleys, with another six in the wards.
Nationwide the INMO Trolley/Ward Watch figures show a total of 550 patients without beds in Irish hospitals today.
University Hospital Limerick is the worst affected with a staggering 100 people on trolleys, followed by 66 at Cork University Hospital and 58 at UHG.