Alfonso Laso Sedeño (died 1607) was a Roman Catholic prelate who served as Archbishop (Personal Title) of Mallorca (1604–1607),[1] Archbishop of Cagliari (1596–1604),[2][3] and Bishop of Gaeta (1587–1596).
[4] On 12 October 1587, Alfonso Laso Sedeño was appointed during the papacy of Pope Sixtus V as Bishop of Gaeta.
[4][5][6] On 7 February 1588, he was consecrated bishop by Enrico Caetani, Cardinal-Priest of Santa Pudenziana, with José Esteve Juan, Bishop of Vieste, and Cristóbal Senmanat y Robuster, Bishop of Orihuela, serving as co-consecrators.
[5][6] On 7 February 1596, he was appointed during the papacy of Pope Clement VIII as Archbishop of Cagliari.
[2][3][5][6] On 1 December 1604, he was appointed during the papacy of Pope Clement VIII as Archbishop (Personal Title) of Mallorca.