Garcia of Arlanza was an 11th-century Benedictine abbot who led the monastery of San Pedro de Arlanza in Castile. Born around 1000 in Quintanilla, he entered the monastery at a young age and was eventually chosen to succeed Abbot Aureolo in 1050. During his thirty-year leadership, the monastery experienced significant economic growth and received substantial royal donations from monarchs such as Fernando I and Sancho II. He is remembered as a pious figure who performed miracles, including the transformation of water into wine.