Robert Gregg
Robert or Bob Gregg may refer to:
- Robert Gregg (bishop), Anglican archbishop
- Bob Gregg (footballer, born 1904), English football player
- Bob Gregg (footballer, born 1899), Scottish football player
- Robert Gregg (field hockey), American Olympic hockey player
- Robert D. Gregg, American bioengineer, roboticist and inventor
- Robert John Gregg, linguist
- Bobby Gregg, American musician
- Clark Gregg, American actor, director, and screenwriter