Robert Lewis Thomson (born August 16, 1963) is a Canadian professional baseball manager for the Philadelphia Phillies of Major League Baseball.
In 2018, Thomson was named as the bench coach of the Philadelphia Phillies. On June 3, 2022, Thomson was named interim manager of the Philadelphia Phillies following the firing of manager Joe Girardi. After leading the Phillies to their first playoff series win since 2010, Thomson was named the full-time manager on October 10, 2022. That year, he went on to lead the Phillies to their first National League pennant since 2009.