- Source of Wealth: Business (Hartz Group)
- Age: 81
- Birth Place: New York City, New York, U.S.
- Marital Status: Married (Allison Maher)
- Full Name: Leonard Norman Stern
- Nationality: American, Israeli and South African
- Date of Birth: March 28, 1938
- Ethnicity: German and Ashkenazi Jewish
- Occupation: Chairman and CEO of Hartz Mountain Industries, Inc.
- Education: New York University and Leonard N. Stern School of Business
- Children: 3 (Edward, Emanuel and Andrea)
Leonard Stern’s fortune initially came from his father after he inherited a portion of the family business, Hartz Mountain Corporation (HMC), which was founded by his father Max Stern. In 1960, Leonard Stern took absolute control of the company after buying out his sibling’s shares of the family business.