John Brock Parker (born 1982) is a professional poker player from Silver Spring, Maryland. At the 2009 World Series of Poker he won two WSOP bracelets. First, he defeated Daniel Negreanu heads-up to win a $2,500 limit Texas hold 'em short-handed event. Just four days later, he won his second bracelet in a $2,500 no limit hold 'em short-handed event. In 2014, he won the $10,000 Omaha Hi-Low Championship to win his third career WSOP bracelet. He has 34 career cashes at the WSOP, including 10 final tables.