Arnold Krumm-Heller (April 15, 1876 – 1949) was a German doctor, occultist, Rosicrucian, and founder of Fraternitas Rosicruciana Antiqua (FRA), a traditional Hermetic order that operates in Brazil.
Krumm-Heller travelled to Latin America when he was quite young and served in the army of Mexico as a medical Colonel. In Mexico he began to methodically study occultism, gnosis and spiritualism, becoming familiar with the works of Helena Blavatsky, Louis Claude de Saint-Martin, Gerard Encausse and Eliphas Lévi.
He joined several esoteric and fraternal orders, including Ordo Templi Orientis (OTO), and was a contemporary of Theodor Reuss (founder of the OTO) and of Spencer Lewis (Imperator of AMORC). He knew Aleister Crowley and was greatly influenced by his mystical conceptions. Aleister Crowley, while in Berlin showing his paintings, wrote in his diary for February 11, 1932: "[Krumm-Heller] here with Peryt Shou".
He participated in Freemasonry in the Ancient and Accepted Scottish Rite and the Ancient and Primitive Rite of Memphis-Mizraím. In Peru he received the symbolic name of Huiracocha, by which he would be known in esoteric circles. He started the FRA in Fraternitas Rosae Crucis (FRC), having become distanced from both the O.T.O. and Spencer Lewis. Krumm-Heller died in Marburg, Germany, aged 73.