The Westchester Jewish Center is a Conservative synagogue in Mamaroneck, New York. It offers programs for all ages, such as nursery and religious schools, Torah study, summer camp, extra-curricular activities for children in third grade and through high school, a brotherhood and sisterhood, and regular services, including minyans twice a day, Shabbat and Yom Tov.
The Center grew out of an initially small group in Mamaroneck, the Social and Aid Society, which was founded in 1905. It later became the Hebrew Institute of Mamaroneck, gradually transforming into what it is today.
The Center's first two full-time, long-term rabbis, Rabbi Irving Koslowe and his wife Marly, joined the congregation in 1943. In 1949 the congregation changed its name to the Westchester Jewish Center and five years later moved to its present location.
Rabbi Koslowe was given life tenure in 1966 and finally retired in 1985.
Rabbi Jeffrey Segelman has been the rabbi of the Center since 1987. Originally from Boston, he received bachelor's degrees from Boston Hebrew College and Boston University. He has a master’s degree from the Jewish Theological Seminary in New York, where he also earned his rabbinic ordination.