The Archdiocese of Split-Makarska is a Latin Metropolitan archdiocese of the Catholic church in Croatia and Montenegro. The diocese was established in the 3rd century AD and was made an archdiocese and metropolitan see in the 10th century. The modern diocese was erected in 1828, when the historical archdiocese of Salona was combined with the Diocese of Makarska. It was elevated as an archdiocese and metropolitan see in 1969, restoring the earlier status of the archdiocese of Split, as it is also known. The diocese was also known as Spalato-Macarsca.

The Archdiocese of Zadar is a Latin Church ecclesiastical territory or archdiocese of the Catholic church in Croatia. The diocese was established in the 3rd century AD and was made an archdiocese by the Pope Anastasius IV in 1154. Today, it is not part of any ecclesiastical province of Croatia, rather it is the only Croatian archdiocese directly subject to the Holy See.