Nazaria Ignacia (1889–1943) was a Spanish nun who dedicated her life to missionary work across several continents. Born in Madrid, she initially joined the Little Sisters of Abandoned Elderly before establishing her own religious congregation, the Missionaries of the Crusade. Her ministry spanned Spain, Mexico, and Bolivia, where she served in Oruro. After meeting Pope Pius XI in Rome, she eventually moved to Argentina, where she passed away in Buenos Aires. She is recognized as a saint in the Catholic Church.