רבי יוסף יוזל הורוביץ, מגדולי מפיצי תנועת המוסר, תלמידו של הרב ישראל מסלנט, ומייסד ישיבת נובהרדוק, שביססה את בניית אישיותם של חניכיה על מוסר ועבודת מידות מעשית. התפרסם בכינוי "הסבא מנובהרדוק".
Yosef Yozel Horowitz, also Yosef Yoizel Hurwitz, known as the Alter of Novardok, was a student of Rabbi Yisroel Salanter, the founder of the Musar movement. The Alter was also a student of Rabbis Yitzchak Blazer and Simcha Zissel Ziv and spent some time in Brest, learning from Rabbi Chaim Soloveichik. He established the Novardok yeshiva in the city of Navahrudak. Additionally, he established a network of yeshivas in Dvinsk, Minsk, Warsaw, Berdichev, Lida and Zetl. Some of his discourses were recorded in the book Madregas Ha-Adam. The most basic and important theme in his book is Bitachon.