Sinn Féin has published legislation that would create an extra bank holiday, to be called "Republic Day".
Party spokesperson Aengus Ó Snodaigh said the holiday would be on 24 April, the aniversary of the reading of the 1916 Proclamation outside the GPO by Padraig Pearse.
Mr Ó Snodaigh said this would bring Ireland, which currently has nine bank holidays, closer to the European average of 11.
He said the holiday would mark the sacrifice of men and women who gave their lives in pursuit of an independent Irish Republic.
Asked if that included members of the Provisional IRA who died in the course of the Troubles, Mr Ó Snodaigh said it did.