The Diocese of Lavant(tal) (Latin: Lavantina) was a suffragan bishopric of the Archdiocese of Salzburg, established 1228 in the Lavant Valley of Carinthia. In 1859 the episcopal see was re-assigned to Maribor (Marburg an der Drau) in present-day Slovenia, while the Carinthian parishes passed to the Diocese of Gurk. The Roman Catholic Diocese of Maribor (Marburg, in Slovenia) was later separated from the Salzburg ecclesiastical province and became a suffragan of the Archbishop of Ljubljana on 5 March 1962, with which the title of Bishop of Lavant was united. On 7 April 2006 the diocese was elevated to the Archdiocese of Maribor.