Samuel Robson “Rob” Walton (born October 28, 1944) is an American billionaire heir to the fortune of Walmart, the world's largest retailer. He is the eldest son of Helen Walton and Sam Walton, and was chairman of Walmart from 1992 to 2015. As of October 2022, Walton had an estimated net worth of US$61 billion, making him the 18th richest person in the world. He is also the principal owner of the National Football League (NFL)'s Denver Broncos.