Heinrich Arnold Krumm-Heller (15 April 1876 – 19 April 1949) was a German doctor, occultist, Rosicrucian, and founder of Fraternitas Rosicruciana Antiqua (FRA), a Hermetic order in Brazil. He also was a German naval intelligence agent during the Mexican Revolution and World War I. A prolific writer, he published more than 30 esoteric books, novellas, history books, biographies, as well as countless articles in his magazine Rosa Cruz and similar publications.