St. Columcille's Hospital (Irish: Ospidéal Naomh Colm Cille) is a public hospital providing acute-care hospital services and located in Loughlinstown, County Dublin, Ireland.

It is managed by Ireland East Hospital Group.

[1] The hospital has its origins in the Rathdown Union Workhouse and Infirmary which was designed by George Wilkinson and opened in February 1841.

[2] The workhouse infirmary was re-designated a district hospital in 1920.

[2] The hospital provides 118 beds, of which 110 are in-patient acute beds, while 8 are reserved for acute day cases.