The new Child and Family Agency will be officially launched today by Taoiseach Enda Kenny and Minister for Children Frances Fitzgerald.
The state body will assume responsibility from the HSE for a range of services including child welfare and protection, preschool inspection, and domestic violence services.
The Child and Family Agency officially became a legal entity on 1 January, but its formal launch will take place today.
The new body brings together the former HSE child and family service, the family support agency, and the national educational welfare board, as well as a number of other child services.
It will be responsible for protecting children in circumstances where their parents are either unable or unlikely to provide the care the child needs.
It is also tasked with ensuring that every child in the state attends school or receives a proper education.
Child and Family Agency Chief Executive Gordon Jeyes said the body will become a ferocious corporate parent, demanding for the children of Ireland the very best that the state can give.