St Eunan's Cathedral (/ˈjuːnən/ YOO-nən) may refer to:
- The Roman Catholic Cathedral of St Eunan and St Columba in Letterkenny, County Donegal, Ireland.
- The Anglican St Eunan's Cathedral, Raphoe in Donegal
St Eunan's Cathedral (/ˈjuːnən/ YOO-nən) may refer to: