S. Robson Walton

Samuel Robson Walton (born October 27, 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 February 2026, Forbes estimated his net worth to be US$145.1 billion, making him the 11th richest person in the world. He is also the principal owner of the Denver Broncos.

Rob Walton was born on October 27, 1944, in Tulsa, Oklahoma, the oldest of four children of Sam Walton (1918–1992), cofounder of Walmart, and Helen Walton (1919–2007). He has a younger brother, Jim Walton, and a younger sister, Alice Walton. Another brother, John Walton, died in 2005.

Walton attended The College of Wooster and graduated from the University of Arkansas in 1966 with a Bachelor of Science degree in business administration, where he was a member of the Lambda Chi Alpha fraternity. He received his juris doctor degree from Columbia Law School in 1969. Walton is also a trustee at The College of Wooster.

Walton spent over $17.6 million in support of Republican candidates in the 2024 United States elections. As of August 2026, Walton spent $11 million in support of Republican candidates in the 2026 United States elections.

By the time he left Tulsa in 1978, Walton had three children, was divorced from his first wife, and had remarried to Carolyn Funk. He and Carolyn filed for divorce in 2000. He married his third wife Melani Lowman-Walton in 2005. His children include Carrie Walton Penner.

Walton is a well-known collector of automobiles.