The Cathedral of St. Theresa of Avila is a Latin Catholic cathedral and minor basilica located in Subotica, Serbia, the seat of the Diocese of Subotica. It is dedicated to Saint Theresa of Avila.

The Diocese of Subotica is a Latin diocese of the Catholic Church in Serbia. It is subject to the Roman Catholic Archdiocese of Belgrade. The Diocese is centered in the city of Subotica.