Elon Reeve Musk is a South African-born American entrepreneur and businessman. He is the founder, CEO, and chief engineer of SpaceX; CEO and product architect of Tesla; founder and CEO of xAI; founder and CTO of X Corp.; co-founder of Neuralink and The Boring Company; and co-founder of OpenAI, from which he later departed. Musk is the wealthiest person in the world as of 2025.

Kimbal James Musk is a businessman and restaurateur. He co-owns The Kitchen Restaurant Group, with restaurants in Colorado, Chicago, and Austin. He is the co-founder and chairman of Big Green, a nonprofit that has built hundreds of outdoor classrooms called Learning Gardens in schoolyards across the United States.Musk is also the co-founder and chairman of Square Roots, an urban farming company growing food in hydroponic, indoor, climate controlled shipping containers. Musk sits on the boards of Tesla Inc. and SpaceX, of which his older brother Elon is the CEO. He was on the board of Chipotle Mexican Grill from 2013 to 2019 He is the brother of Elon Musk and Tosca Musk, the son of Errol and Maye Musk, and a major shareholder in Tesla. In 1995 he co-founded the software company Zip2 with Elon, which was acquired by Compaq for $307 million in 1999.