| Honorific-Prefix: | Rabbi |
| Yisroel Moshe Olewski Hebrew: הרב ישראל משה אולבסקי | |
| Chief Rabbi of Celle | |
| Semicha: | Rabbi Menachem Ziemba |
| Other Post: | Rabbi of Radziejów, Rabbi of Bergen-Belsen |
| Birth Place: | Osięciny Poland |
| Death Place: | New York, New York U.S. |
| Buried: | Jerusalem, Israel |
| Denomination: | Orthodox |
Rabbi Yisroel Moshe Olewski (1916-1966) was the rabbi of Radziejów, Poland prior to the holocaust. After the holocaust, he was one of the rabbis of Bergen-Belsen and the Chief Rabbi of Celle. Later, after emigrating to the United States he was the founder of the Gerrer yeshiva in Brooklyn.
Rabbi Yisroel Moshe Olewski was born in Osięciny Poland on September 26, 1916. His father was Rabbi Yehuda Aryeh and his mother was Henna Rivka, the daughter of Rabbi Dovid Shlomo Zalman Neiman who was the Rabbi of Osięciny. Rabbi Yisroel Moshe Olewski's father died when he was 6 years old and he was sent to study in a yeshiva in Włocławek. Thereafter, he studied in a yeshiva in Warsaw and then in Yeshiva Chachmei Lublin. When he became of age, Rabbi Olewski married and settled in his father-in-law's hometown of Izbica Kujawska.[1] [2]
Rabbi Olewski received his rabbinical ordination from Rabbi Menachem Ziemba. Thereafter he became the rabbi of Radziejów Poland.
Rabbi Olewski survived the Holocaust and was liberated in Bergen-Belsen on April 11, 1945. He was appointed to be one of member rabbis of the bais din in Bergen-Belsen and together with the other rabbis was instrumental in permitting numerous agunot to remarry.
In late 1945, Rabbi Olewski was appointed by the British Chief Rabbi's Religious Council to be the Chief Rabbi of Celle which was located in the British Zone of Germany.In 1949, the British occupation of North-West Germany ended and the British Chief Rabbi's Religious Emergency Council and its appointees were required to wrap up their operations in Germany. However, the local Jewish community asked Rabbi Olewski to continue as their Rabbi and Rabbi Olewski remained in his position. Ultimately in 1950, he decided to emigrate to the United States.
Rabbi Olewski was also appointed to be one of the member Rabbis of the Vaad Harabonim of The British Zone, which was established and led by Rabbi Yoel Halpern.[3]
Rabbi Olewski, together with Rabbi Shlomo Zev Zweigenhaft and Efraim Londoner[4] were the leaders of Agudas Yisroel of the British Zone. Rabbi Olewski very much engaged in advocating for both the spiritual and physical needs to the Jews in the zone.
After emigrating to the United States, Rabbi Olewski was appointed to be the principal of the Bostoner yeshiva. Later, Rabbi Olewski was appointed as Rabbi of one of the Gerrer synagogues in Brooklyn and was the founder of the Gerrer Yeshiva in the United States.
Rabbi Olewski died from cancer in New York City on May 26, 1966[5] and was buried in Jerusalem, Israel.