María Sagrario de San Luis Gonzaga, born Elvira Moragas Cantarero, was a Spanish pharmacist and Discalced Carmelite nun who lived from 1881 to 1936. After becoming one of the first women to practice pharmacy in Madrid, she entered the religious life in 1915. She served as a prioress and mistress of novices before the Spanish Civil War. During the conflict, she refused to reveal the location of convent valuables during interrogation, leading to her execution in Madrid. She is recognized as a blessed in the Catholic Church.