Bon Secours Hospital Galway has revealed plans for a €36.5 million expansion at its site in Renmore.
The proposed plans would see the addition of two new theatres at the hospital, as well as four theatre recovery bays and 14 surgical dayward bays.
Endoscopy services will also be expanded to add a fourth endoscopy treatment room and 16 new endoscopy bays.
The plans will now be submitted to Galway City Council for consideration.
The plans follow recent investments to relocate the hospital's minor operating procedure room and the addition of a third endoscopy suite, as well as the addition of a Magnetom Sola MRI scanner.
The hospital's chief executive Henry Burrows said the recent investments will collectively place the hospital "at the forefront of healthcare provision in the west of Ireland".