A 19-year-old Brazilian student, Livia Voigt, claims the title of the world s youngest billionaire, surpassing Italian teen Clemente Del Vecchio. Voigt, heiress to a major electrical motors manufacturer, holds a net worth of $1.1 billion. Meanwhile, Del Vecchio, with assets totaling $4.8 billion, inherits a significant stake in his father s eyeglasses company. India s youngest billionaires include Zerodha and Flipkart founders.