Tomchei Tmimim

Tomechei Tmimim was founded by Rabbi Sholom DovBer Schneersohn for the study of Hasidic philosophy according to the Chabad tradition. He called the students of this yeshiva 'tmimim' (sing. "tomim" תמים = pure, perfect[3]).

When Rabbi Yosef Yitzchok Schneersohn left the Soviet Union in 1927, the yeshiva reestablished itself in Warsaw and later in Otwock, Poland. In the course of World War II, the yeshiva escaped to Shanghai, China, along with some other yeshivot like Mir. Once the Rebbe was safely evacuated to New York, the Yeshiva was reestablished in New York City, where it remains to this day.

Rabbi Yisroel Yitzchok Piekarski was the Rosh Yeshiva for 42 years, from 1951 until 1993.[4][5]

The central Yeshiva is housed today at the Chabad Lubavitch World Headquarters, at 770 Eastern Parkway in Brooklyn, NY, with approximately six hundred students. Similarly named yeshivas, many of which are nevertheless formally independent, are to be found in major cities in the United States, Canada, Europe, South America, South Africa, Australia, and the former Soviet Union, and Israel. Many of the branches also perform the functions necessary to grant rabbinical ordination to their students. A significant number of graduates of Tomchei Tmimim continue working within Chabad as religious functionaries, whether as shluchim in Chabad Houses or as teachers in schools.