A memorial garden will be opened to honour 83 gardai killed on duty.
Medals will also be presented to a representative from each of their families during the service in Dubhlinn Gardens at Dublin Castle.
The names of the members who died in the service of the state will appear on the Roll of Honour and inscribed in stone within the garden.
A specially commissioned glass sculpture commemorates the sacrifice of the families left behind while a stone monument is a tribute to all deceased members of An Garda Siochana, the Royal Irish Constabulary and the Dublin Metropolitan Police.
Taoiseach Brian Cowen will officially open the Garda Siochana Memorial Garden alongside Garda Commissioner Fachtna Murphy and Justice Minister Dermot Ahern.
A liturgical ceremony will be followed by the laying of wreaths.