Sivan Adelson is the daughter of Sheldon Adelson, the late American billionaire casino magnate and founder of Las Vegas Sands Corporation, and his first wife, Sandra Windeler. Sheldon and Sandra were married from 1970 until their divorce in 1988, during which time they had three children, including Sivan and two sons. The Adelson family is of Jewish ethnicity, with Sheldon known for his strong support of Jewish and pro-Israel causes through extensive philanthropy. Sivan has largely stayed out of the public eye, unlike her father's second family with his wife Miriam Adelson, who inherited much of his business empire and political influence after his death on 2021-01-11. As part of the family, Sivan benefited from her father's wealth, reportedly receiving significant financial gifts during his lifetime, though her personal net worth and specific holdings are not publicly detailed. Public information about Sivan's life is limited, reflecting her preference for privacy. There are no widely reported details on her education, career, or professional involvements, though she is occasionally mentioned in contexts related to family matters, such as the tragic deaths of her brothers Mitchell Adelson in 2001 from a drug overdose and another family member's struggles with addiction. The Adelson family's influence extends to Republican politics, where Sheldon was a major donor, but Sivan's own political affiliations or activities are undocumented. No legal troubles, lawsuits, or controversies directly involving Sivan are publicly known, distinguishing her from her father's high-profile legal battles over business practices and personal conduct.