Rabbi Mordechai Leifer (died 1895) was a great-great-grandson of Rabbi Meir "The Great" of Premishlan and served as Grand Rabbi of Nadvorna. He was raised by his great uncle, the famous Rebbe Meir'l of Premishlan. Hasidim from all over Hungary and Romania would come to receive his blessings. An extraordinarily large number of his descendants became Hasidic rebbes, including many around the world today. His teachings are collected in Gedulas Mordechai, Tiferes Mordechai, Aspaklarya Hameira, and Maamar Mordechai.