Solomon Loewisohn, (1789–1821) was a Hebrew writer. Born in Mor, Hungary, he received a Jewish education but at the same time studied secular subjects in a Capuchin monastery. With the aid of his relative Solomon Rosenthal, a wealthy scholar, he studied in Prague at a yeshivah and at the university. In 1811 and 1812 he published two grammatical studies which were collected and annotated by A. B. Lebensohn and J. Behak under the title Mehkerei Lashon (1849). He wrote his first important poem, an elegy on the death of his friend Baruch Jeiteles, in 1814. In Prague Loewisohn eked out a meager living by giving private lessons. But the five years, between 1815 and 1820, were the most productive and the most "affluent" years of his life. He became proofreader and counselor of Anton von Schmid. After 1820, he became mentally ill. Insanity led to his untimely death. He published Melizat Yeshurun, his chief work, in 1816. In 1819 he published Mehkerei Arez, the first Hebrew geographical handbook for the biblical period. It utilized Josephus, Eusebius, Pliny, and Strabo. Translated into German two years after its publication, the book served as a handbook for generations of readers, developed a geographical terminology, and pioneered the way for utilization of rabbinic sources. Loewisohn had also a keen interest in Jewish liturgy. He annotated and translated the kinot and also annotated the Shir ha-Yihud ("Hymn of Unity") and wrote a preface on the value of prayer for the siddur of Judah Leib Ben Zeeb (1816). Loewisohn also wrote in German and published several articles in the periodical Sulamith, and a history of the Jews, Vorlesungen ueber die neuere Geschichte der Juden (1820) which was praised by H. Graetz.