Aaron ben Zechariah Friedenthal of Jarosà Âaw (; ), also known as simply Aaron Jarosà Âaw, was a Galician Maskilic writer, editor, and publisher. He was a member of Moses Mendelssohn's Biurist school of Biblical exegesis.
Aaron Friedenthal was born in Jarosà Âaw, Galicia, and studied at Berlin. He was a tutor in the house of Moses Mendelssohn; afterwards, he returned to Galicia to serve as a teacher in the new Jewish schools, eventually becoming a director of the Galician state educational system.
Friedenthal's commentary on the Book of Numbers appeared in the first edition of Mendelssohn's Pentateuch (Netivot ha-Shalom, Berlin, 1783) and was included in all subsequent editions. He edited the third edition of Maimonides's Beþur Millot ha-Higgayon ('Words of Logic'), with Moses Mendelssohn's Hebrew commentary (Berlin, 1784). He also published the first posthumous editions (Lemberg, 1790 and 1791), with a new preface.