Ana de Jesús, O.C.D., translated into English as Ann of Jesus, also known as Ann Lobera (25 November 1545 – 4 March 1621), was a Spanish Discalced Carmelite nun and writer. She was a close companion of St. Teresa of Avila, foundress of the Carmelite reform and served to establish new monasteries of the Order throughout Europe. Known as a mystic and for her writings on prayer, she has been declared Venerable by the Catholic Church.