Marc Belzberg (born 1954) is a Canadian-Israeli businessperson, real estate developer, and prominent Jewish philanthropist with deep ties to Jewish causes, particularly in Israel. Coming from the influential Belzberg family known for their business ventures in Canada, he grew up in a wealthy environment and was involved in Jewish youth organizations like USY during his high school years in Vancouver. After early experiences in finance on Wall Street and opening the New York office for First City Capital Corporation, he built a career spanning real estate development, venture capital, high-tech, and investing. In 1991, he immigrated to Israel from New York, where he founded Belzberg Developments Ltd. and took on leadership roles in various enterprises, including as Chairman and CEO of E-Sim Ltd. His philanthropic work is a cornerstone of his influence, focusing on Jewish education, outreach, and support for victims of terrorism. He is a major donor to Aish HaTorah and co-founded OneFamily in 2001 with his wife Chantal, serving as its Chairman to provide aid to terror victims and their families in Israel. Residing in Jerusalem, he has been vocal about Israel's security challenges. Belzberg holds Israeli nationality, indicating strong ties to Israel, and has maintained a relatively low public profile, focusing on behind-the-scenes impact rather than media attention. His work exemplifies the intersection of business acumen and Orthodox Jewish values, leveraging family wealth and networks to support Israeli and global Jewish initiatives.