Robert Stein may refer to:

• Bob Stein (American football) (born 1948), American football linebacker
• Robert Stein (computer pioneer) (born 1946), American computer pioneer and electronic publisher
• Robert Stein (explorer) (1857-1917), Prussian-American Arctic explorer
• Robert F. Stein, American physicist and astronomer
• Robert M. Stein, American political scientist
• Robert Stein (academic) (born 1939), American academic
• Robert Stein, Jr., comptroller for the Coalition Provisional Authority in Iraq, convicted of fraud

[ Source: Wikipedia ]