Shraga Feivel Mendlowitz (1886 – 7 September 1948)[1][2] was a leader of American Orthodox Judaism and founder of institutions including Torah U'Mesorah, an outreach and educational organization.

He was twelve when the family relocated to Mezőlaborc (now Slovak: Medzilaborce), where he studied "with Reb Aaron, dayyan of Mezo-Laboretz, who considered him his top pupil.

"[7] At age 22, he "married his step-mother's younger sister, Bluma Rachel"[6][8] in the town of Humenné, Slovakia, and began to study several not well known Jewish writings, including the works of Rabbi Samson Raphael Hirsch.

[citation needed] Mendlowitz actively sought positions in Germany and the United States, with the intention of disseminating knowledge of Judaism to Jews previously unexposed to their heritage, and in September 1913, he arrived alone in Philadelphia.

Despite his devotion to Torah Vodaath he assisted in the founding (both personally and financially) of several similar institutions, such as Mesivta Chaim Berlin (to which he relinquished a number of his top pupils), Telshe Cleveland and Beis Medrash Gevoha.

Aish Dos was a specialized institution that focused on teaching outreach skills, Torah U'mesora was a nationwide umbrella organization for Jewish day schools, and Beis Medrash Elyon was one of America's first post-graduate yeshivas (which also included a kollel).