Aharon Mordechai Rokeach (born 12 October 1975 [7 Cheshvan 5736]) is the only child — and heir — of the current Rebbe of Belz, Rabbi Yissachar Dov Rokeach.

[2][3] Aharon Mordechai was born to Yissachar Dov Rokeach and Sarah Hager, daughter of Rabbi Moshe Yehoshua Hager, the future Vizhnitzer rebbe, after 10 years of marriage.

[4] The occasion of his bar mitzvah on 18 October 1988 (7 Cheshvan 5749) prompted a mass gathering of Hasidim in the half-finished Belz Great Synagogue in Jerusalem, followed by a Belzer convention that filled the Jerusalem Convention Center.

[2] On July 7, 1992,[2] Aharon Mordechai was engaged to Sarah Leah Lemberger, daughter of Rabbi Shimon Lemberger, Makova Rebbe in Kiryat Ata.

[3] They were married on August 3, 1993, in Kiryat Belz, Jerusalem,[2] in the presence of 60,000 people.