Robert Scot Shields is an American former professional baseball relief pitcher. He played his entire baseball career with the Los Angeles Angels of Anaheim of Major League Baseball (MLB). He was the last member of the Anaheim Angels' 2002 World Series Championship team remaining on the team's roster when he announced his retirement in 2011.

The 2002 Anaheim Angels season was the franchise's 42nd, and it ended with the team's first American League pennant and World Series championship.