Robert, Rob, Bob, or Bobby Duffy may refer to: Robert Duffy (politician) (born 1954), Lieutenant Governor of New York Robert Duffy (footballer) (born 1982), Welsh footballer Robert Duffy (American football) (1903–1974), Dickinson College football coach (1927–28) Bob Duffy (basketball, born 1922) (1922–1978), American basketball player in the BAA Bob Duffy (basketball, born 1940), American basketball player in the NBA Bobby Duffy (died 1992), Irish soccer player Robert Duffy (businessman) (born 1954), American businessman Robert Duffy (programmer) (born 1964), American video game programmer Bob Duffey. (American motorcycle stunt racer)