Leander of Seville was a Hispano-Roman Catholic prelate who served as Bishop of Seville. He was instrumental in effecting the conversion of the Visigothic kings Hermenegild and Reccared to Chalcedonian Christianity. His brother was the encyclopedist Isidore of Seville.

The Metropolitan Archdiocese of Seville is a Latin Church archdiocese of the Catholic Church in Seville, Spain. The Diocese of Seville was founded in the 3rd century. It was raised to the level of an archdiocese in the 4th century. The current archbishop is José Ángel Saiz Meneses. It has the suffragan dioceses of:Cádiz y Ceuta Córdoba Huelva Canaries Jerez de la Frontera San Cristóbal de La Laguna o Tenerife