Alfonso XIII (Spanish: Alfonso León Fernando María Jaime Isidro Pascual Antonio de Borbón y Habsburgo-Lorena; English: Alphonse Leon Ferdinand Mary James Isidore Pascal Anthony of Bourbon and Habsburg-Lorraine; 17 May 1886 – 28 February 1941) was King of Spain from 1886 until 1931.
Alfonso was monarch from birth, as his father Alfonso XII had died the previous year. Until his 16th birthday in 1902, his mother, Maria Christina of Austria, served as his regent, in a period which saw Spain lose its Caribbean and Pacific colonies during the Spanish–American War. Due to family ties to both sides, Alfonso kept his kingdom neutral in World War I (1914–1918).
From 1923 to 1930, Alfonso supported the dictator Miguel Primo de Rivera. In 1931, in the face of overwhelming popular rejection, Alfonso fled the country as the Second Spanish Republic was proclaimed. In exile, he retained his claim to the defunct throne until 1941, when he abdicated in favour of his third son Juan. He died six weeks later.