Orchot Tzaddikim (Hebrew: ארחות צדיקים) is a book on Jewish ethics written in Germany in the 15th century, entitled Sefer ha-Middot by the author, but called Orḥot Ẓaddiḳim by a later copyist.
Under this title a Yiddish translation, from which the last chapter and some other passages were omitted, was printed at Isny in 1542, although the Hebrew original did not appear until some years later (Prague, 1581).
Most of the book is not original writing; it is following the order of "The Improvement of the Moral Qualities" by Solomon ibn Gabirol, adding paragraphs from many of Maimonides' works, and ideas from the famous ethical writings "Shaarei Tshuva" (by Rabbenu Yona of Gerona) and Chovot HaLevavot.
According to Rabbi Gil Student, "Orechos Tzadikim is an anonymous mussar sefer that has enjoyed a lasting impact on Judaism.
We can suggest that the author lived in the late 14th century in France or among French exiles, but not in Germany or Spain.