Irving Moskowitz (January 11, 1928 – June 16, 2016) was an American physician, billionaire businessman, casino developer, and philanthropist. Born in New York City to Polish Jewish immigrant parents and raised in Milwaukee, Wisconsin, he lost 120 relatives in the Holocaust, which profoundly influenced his Zionist commitments. He developed an early passion for baseball, playing semi-professionally, before earning a medical degree from the University of Wisconsin Medical School in 1952. After relocating to California, he established a successful medical practice and expanded into healthcare management, specializing in hospital management by building and operating hospitals. Transitioning to business, Moskowitz became a prominent figure in the gambling industry, earning the nickname "bingo king" through ownership of bingo parlors and casinos in California and Florida, ultimately basing his operations in Miami Beach. His wealth from these ventures funded extensive philanthropic efforts. He was the founder of the Irving I. Moskowitz Foundation and, with his wife Cherna, established the Cherna Moskowitz Foundation to promote Jewish education and settlement initiatives. He was known as a major donor to Israeli settler organizations, providing significant funding and major donations for housing projects and settlement activities in East Jerusalem and the West Bank aimed at shifting demographic balances in disputed Palestinian territories—a strategy that sparked international criticism for exacerbating the Israeli-Palestinian conflict. Moskowitz was affiliated with right-wing Israeli think tanks such as the Ariel Center for Policy Research and supported political figures aligned with settlement expansion. In his later years, he served on the board of Bar-Ilan University. His activism included legal battles over land acquisitions in contested areas. Moskowitz left a complex legacy as both a self-made entrepreneur and a polarizing figure in Middle East geopolitics.