The Basilian priest, director of the Salt and Light Catholic Media Foundation and Television Network in Canada, is also the author of ZENIT's column Words Made Flesh.
After his appointment, announced today by the Vatican press office, he told ZENIT, "It is a privilege to serve the universal Church through the important work of the Council for Social Communications."
He added, "We have all seen the great challenges and potential for good communications at all levels of the Church, especially over the past month."
Father Rosica affirmed: "This appointment is a tribute to and responsibility given to the Church in Canada, to all of the young adults working with me at Canada's first national Catholic television network, and to those generous benefactors who have made this project of the new evangelization possible in Canada."
Born in 1959, Thomas Rosica was ordained to the priesthood in 1986. He holds dual citizenship in the USA and Canada.
Father Rosica is a Scripture scholar and also serves on the General Council of the Congregation of Priests of St. Basil since July, 2006.
He began Salt and Light Television in July 2003. In October 2008, he served as the English-language media attaché of the synod of bishops at the Vatican.
The Vatican also announced today the appointment of two Franciscan priests as consultors of the Congregation for the Causes of Saints: Italian Father Priamo Etzi, the dean of the faculty of canon law at Rome's Pontifical Antonianum University; and Father Stéphane Oppes, also Italian, a philosophy professor at the same university.