The Rite of Christian Initiation of Adults is the process whereby adults are initiated into full communion with the Catholic Church. The R.C.I.A. is for:
those who were baptized in other faith traditions but now feel called to become Catholic.
those who have never been baptized or do not belong to a faith tradition but now feel called to become Catholic.
those who were baptized Catholic but never received Confirmation and First Holy Communion.
those who have received both Catholic baptism and First Holy Communion but were never Confirmed.