M. H. Landauer (1808 – February 3, 1841) was a writer on Jewish mysticism, born at Kappel, near Buchau, Württemberg. He was a son of the cantor Elias Landauer, and at the age of 18 entered the yeshivah and lyceum in Carlsruhe; later he studied at the universities of Munich and Tübingen. In spite of ill health he returned to Munich in 1838 to copy from Hebrew manuscripts in the Royal Library extracts for use in his investigations. In 1839 he passed the examination for the rabbinate, and in the following year was appointed rabbi of Braunsbach, Württemberg. Only three months later illness obliged him to resign his position and to return to Kappel, where he died.
Of Landauer's works the following may be mentioned:
Landauer's posthumous works and excerpts, dealing with his investigations of the history and literature of the Kabala, of the Zohar, and of Jewish literature, as well as his report on his studies of Hebrew manuscripts, were published in Orient, Lit. 1845-46.