Donald Rex Murphy (born March 10, 1983) is an American former professional baseball infielder. He attended Riverside Polytechnic High School and Orange Coast Community College in Costa Mesa, California, and was selected by the Kansas City Royals in the 5th round of the 2002 Major League Baseball draft. He is currently the manager for the Class A-Advanced Dunedin Blue Jays, a position he was named to in 2020 after spending several years as a hitting coach in the Toronto Blue Jays organization.