Robert Michael Kielty
- Bats Both, Throws Right
- Height 6' 1", Weight 215 lb.
- School Riverside Community College, University of Southern California, University of Mississippi
- High School Canyon Springs High School
- Debut April 10, 2001
- Final Game September 30, 2007
- Born August 5, 1976 in Fontana, CA USA
Bobby Kielty hit a pinch hit home run off Brian Fuentes in Game 4 of the 2007 World Series against the Colorado Rockies that provided the margin of difference in a 4-3 win by the Boston Red Sox. It was the only World Series at-bat and the final at-bat of his major league career.