The Diocese of Szeged–Csanád (Latin: Dioecesis Szegediensis–Csanadiensis) is a Latin Church diocese of the Catholic Church located in the cities of Szeged and Csanád in the ecclesiastical province of Kalocsa-Kecskemét in Hungary.

The diocesan cathedral is the Cathedral of Our Lady of the Hungarians in Szeged.

The Co-Cathedral of St. Anthony of Padua is based in Békéscsaba.