The HSE received over 5.2 million euro in income from its public hospital car parks last year.
According to freedom of information figures, nearly 1.3 million was collected in Cork University Hospital.
University College Hospital Galway was the next highest, at 630,000 euro.
Sinn Féin's health spokesperson, David Cullinane, says the charges should be done away with.
COVID 19: Health Officials Report 431 New Cases With 12 Additional Deaths
The total number of confirmed cases of coronavirus in the Republic of Ireland has risen to 242,105 with 4,515 cases in County Wicklow.
State Expected To Run Budget Deficit Of €17 Billion In 2021
Ministers have published a Stability Programme Update setting out forecasts for the year.
Dublin Named 5th Most Expensive European City For Rent
The report, which was compiled by ECA International, found the average rent for a three bedroom home in the capital stands at over €3,600 per month.
Eight Arrested Over Murder Of Man In Kildare
Eight people have been arrested in connection with the murder of a man in County Kildare in January.
Ireland To Receive A Further 545,000 Pfizer-BioNtech Covid Vaccines
Ireland will receive an extra 545,000 doses of the Pfizer-BioNtech vaccine this quarter, according to the Taoiseach.
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