Willis Chapman "Chip" Arndt Jr. (born October 2, 1966) is an American gay activist, best known as a winner of The Amazing Race 4 in 2003 with former partner Reichen Lehmkuhl. Arndt attended Hotchkiss School, Yale University, and Harvard University, where he was the president of the Harvard Business School Gay and Lesbian Student Association. Prior to The Amazing Race, he worked as an investment banker.