Johanan HaSandlar (lit. "Johanan the Shoemaker" or "Johanan the Sandalmaker", alternatively "Johanan the Alexandrian") (Hebrew: יוחנן הסנדלר) (c. 100 CE – c. 150 CE) was one of the main students of Rabbi Akiva and a contemporary of Rabbi Shimon bar Yochai. He is one of the tannaim whose teachings are quoted in the Mishnah. The name "HaSandlar" may imply that Rabbi Yohanan earned his living as a shoemaker, but it could also indicate that he was a native of Alexandria, Egypt.
Rabbi Yochanan was a great-grandson of Rabbi Gamaliel the Elder; he also purportedly traced his ancestry back to King David. Rashi, the great medieval commentator, was a 33rd-generation descendant of Rabbi Yochanan.
He is well known for his saying in the Mishnah of Pirkei Avoth (4:14): "Every assembly that is for the sake of Heaven will survive; but if it is not for the sake of Heaven, it will not survive."
- Adin Steinsaltz (23 November 1993). The Talmud: The Steinsaltz Edition : Tractate Ketubot. Random House. p. 88. ISBN 978-0-679-42694-3. Retrieved 14 September 2011.
- Rabbi Yehiel Ben Shlomo Heilprin - Later Achronim