Manhattan Day School, often referred to as MDS, is a co-educational Modern Orthodox Jewish yeshiva elementary school located on the Upper West Side of Manhattan. It was founded in 1943 as Yeshivat Ohr Torah Community School, the first Jewish all-day independent school on the West Side of Manhattan. The rabbis and congregants of Congregation Ohab Zedek and The Jewish Center helped Dr. Joseph Kaminetsky to found the school, who served as its first Executive Director before being recruited by Rabbi Shraga Feivel Mendlowitz to work at Torah Umesorah. Shlomo Riskin served as dean of the school at a later time.