John Mars

John Mars is a co-owner of Mars, Incorporated, and alongside his sister Jacqueline, one of the guardians of a family business that has delighted consumers for over a century. The grandson of founder Frank Mars and son of the legendary Forrest Mars Sr., John played an active role in the company's operations for decades before stepping back from day-to-day management. His tenure was marked by significant international expansion and the diversification of Mars beyond candy into pet care, food, and health services.

John Mars's contributions to the company's growth are profound. During his years of active involvement, Mars expanded aggressively into international markets, particularly in Asia and emerging economies, transforming it from an American candy company into a truly global enterprise. He also championed the expansion into pet care, which grew to become one of Mars's largest and most profitable divisions, encompassing brands like Pedigree, Whiskas, Royal Canin, and the Banfield and VCA veterinary hospital networks.

Known for his intense privacy and work ethic — traits inherited from his famously demanding father — John Mars embodies the principle that the product and the company matter more than personal fame. His commitment to the Mars Five Principles and to keeping the company private has ensured that Mars, Inc. continues to thrive as one of the world's most successful and admired family businesses.