The protest is being organised by the Traveller Mental Health Network.
Traveller campaigners will gather outside the Dail later to demand government action.
They're calling for the government to tackle high rates of mental health illness and suicide in the community.
The Traveller Mental Health Network, which's organising the protest, says it expects hundreds to attend.
Studies show the suicide rate among travellers is seven times higher than those in the settled community.
Eight in ten travellers also find themselves unemployed.
✊Today in Dublin!
⌚12pm at the Dail!
Sending love and solidarity to our friends in Ireland. https://t.co/nk6S8yNwAb— Friends, Families & Travellers (@GypsyTravellers) May 31, 2022
Hugh Friel from the Donegal Traveller Project says not enough's being done to support them.
"We're having a pandemic within our community in relation to mental health issues and suicide," he said.
"We're asking the government basically, who is accountable?"
"All these strategic plans and aims and goals in relation to the traveller community is not working."
