The Diocese of Baton Rouge (Latin Dioecesis Rubribaculensis; French Diocèse de Bâton-Rouge; Spanish: Diócesis de Baton Rouge), is a Latin Church ecclesiastical territory or diocese in the Florida Parishes region of the U.S. state of Louisiana.

The present-day Roman Catholic Diocese of Baton Rouge began with the work of French missionaries among the Native American peoples of the area.

[4] The Baton Rouge area would remain part of the archdiocese for the next 110 years On July 22, 1961, Pope John XXIII erected the Roman Catholic Diocese of Baton Rouge,[5] taking its territory from the Roman Catholic Archdiocese of New Orleans.

Tracy established a consultative process as an integral part of the diocesan administration, and encouraged greater participation by the laity in governing the diocese.

In 1972, he established a committee for the regulation of allowing remarried Catholics to receive the sacraments, saying, "The Church has a pastoral responsibility of healing and forgiveness".

[8] After he removed the Claretian Fathers from the chaplaincy at Louisiana State University in March 1979, 51 priests filed a list of grievances with the Holy See.

[7] During his nine-year tenure, he encouraged the increased participation of the laity in diocesan affairs, and promoted the ecumenical movement by engaging with leaders of other religions.

In October 2009, the diocese paid $225,000 to settle a lawsuit in which a Houston, Texas, man claimed he was sexually abused by Sullivan as a seminarian between 1978 and 1982.

In the court filing, Mayeux's lawyers said that Bayhi had failed his legal responsibility to report the abuse to law enforcement.