H arley Sy is a Filipino billionaire and a member of the powerful Sy family, one of the wealthiest families in the Philippines. He is one of six children of the late Henry Sy Sr., a self-made tycoon who founded the SM Group, the largest conglomerate in the Philippines. He started with a single shoe store and built a massive empire spanning retail, real estate, and banking.

Upon his father's death, Harley and his five siblings inherited his vast business empire. The family's key holdings include SM Investments, which controls the country's largest mall operator, SM Prime Holdings, and its largest bank, BDO Unibank. Harley has been deeply involved in the family's business for his entire career. He serves as an executive director of SM Investments and is also the chairman of China Banking Corporation, another major bank controlled by the family. He is a key member of the second generation that now leads the powerful family conglomerate.