Rozin (Rosin) (also known as Rogachever) Iosif-Efraim Fishelevich (1858, Rogachev, Mogilev Governorate — 1936, Vienna) — rabbi.

Iosif-Efraim Rozin studied in the yeshivas of Slutsk and Shklov, and later studied secular subjects in Warsaw. From 1889 he served as the spiritual rabbi of the Hasidic community of Dinaburg.

He became renowned for his extensive and profound knowledge of ancient and medieval rabbinic literature. During the First World War he moved to Petrograd, where for ten years he served as rabbi of the Hasidic community, after which he returned to Dvinsk.

He prepared for publication and issued five volumes of his commentaries on Maimonides’ “Mishneh Torah” (1903–1908) and two volumes of responsa. Four additional volumes of responsa, prepared for publication by his students, were issued in 1935–1938. A collected edition of his works in five volumes, including legal novelties (ḥiddushim) on the Mishnah and commentaries on the Torah, was published in 1960–1965.

He was buried in Daugavpils.