Boards under Department of Transport
- AirNav Ireland (ANI)
- Bus Átha Cliath
- Bus Éireann
- Córas Iompair Éireann
- Dublin Port Company
- Iarnród Éireann
- Irish Aviation Authority
- Marine Casualty Investigation Board
- Medical Bureau of Road Safety
- National Transport Authority
- Port of Cork Company
- Port of Waterford Company
- Road Safety Authority
- Shannon Foynes Port Company
- The Shannon Airport Group
- Transport Infrastructure Ireland
- daa plc
