Fernando Arêas Rifan is a bishop of the Roman Catholic Church from Campos, Brazil. Since December 2002 he has been the Apostolic Administrator of the Personal Apostolic Administration of Saint John Mary Vianney, also known as the Priestly Union of Saint Jean-Marie Vianney. For some years before 2001 he was allied with Priestly Union when it defied the Holy See by routinely using unauthorized liturgical forms and associated with the Society of St. Pius X. He helped negotiate the reconciliation of the Priestly Union with the Holy See in 2001.

The Personal Apostolic Administration of Saint John Mary Vianney was established on 18 January 2002 by Pope John Paul II for traditionalist Catholic clergy and laity within the Diocese of Campos in Brazil. It is the only personal apostolic administration in existence, and the only canonically regular Catholic Church jurisdiction devoted exclusively to celebrating the pre-1965 form of the Roman Rite in the area. Its current Apostolic Administrator is Bishop Fernando Arêas Rifan.