Mariana of the Purification was a 17th-century Carmelite nun belonging to the Order of the Ancient Observance. Born in Lisbon in 1623, she later moved to Beja, where she professed her religious vows at the convent of Our Lady of Hope. She is primarily recognized for her spiritual experiences, specifically her reports of apparitions involving the Child Jesus. As a writer, she produced several ascetic autobiographical works detailing her religious life.