Barry Greenstein (born December 30, 1954, in Chicago, Illinois) is an American professional poker player. He has won a number of major events, including three at the World Series of Poker and two on the World Poker Tour. Greenstein donates his profit from tournament winnings to charities, primarily Children Incorporated, earning him the nickname "the Robin Hood of poker". He was elected into the Poker Hall of Fame in 2011.