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Dorrit Steinhardt (née Moussaieff) was an American philanthropist known for her significant contributions to Jewish causes alongside her husband, billionaire hedge fund manager Michael Steinhardt. Born in 1938, she married Michael in 1959, and the couple became prominent figures in Jewish philanthropy, supporting initiatives in education, arts, community welfare, and Jewish renewal. Dorrit was particularly involved in organizations promoting Jewish identity and heritage, including the Steinhardt Foundation, which funded programs for Jewish cultural preservation. Her efforts extended to supporting women's initiatives, health-related causes, and intergenerational Jewish education through programs like Birthright Israel. Throughout her life, Dorrit maintained a relatively private profile compared to her husband's high-visibility career, focusing on family and philanthropy. The Steinhardts raised three children—David, Sara, and Jonathan—in New York, where they were active in elite social and charitable circles. Dorrit's legacy includes endowing scholarships and cultural programs, reflecting her commitment to fostering Jewish continuity. She passed away on August 5, 2022, at the age of 84, leaving behind a foundation of charitable work that continues through family-led initiatives.