You need a transit visa for Ireland

Transit (including Transfer Visa) Advice:

All passengers intending to transit through Ireland are advised to check to see if they require a visa or transit visa for Ireland and should apply for such a visa before travelling to Ireland:

Transit passengers making connections at Dublin Airport should be aware of the following:-

• You should check to see if you need a Visa/transit Visa before travelling and apply if required
• In all circumstances you will present to an immigration officer.
• Unless your arrival flight and onward connecting flight is in Terminal 2 between the hours of 0400 and 1600, you will need to go landside to make your onward connecting flight. This requires that you seek permission to enter the State (you will need to have the appropriate Irish entry visa if you are visa required for entry to Ireland).

You need a Transit Visa to travel through an Irish airport/seaport on your way to another destination, subject to the information below.

To transit through Ireland means you are only passing through an Irish airport or seaport to travel to another destination. To transit, you cannot pass through border control. If you pass through border control, you are not transiting.