John D’Agostino (born November 3, 1982) is an American professional poker player from Seymour, Connecticut.

He placed 5th in the second season World Poker Tour (WPT) PokerStars Caribbean Poker Adventure event, winning $99,450.

At the 2004 United States Poker Championship, he had a huge chip lead heading into the final table. However, a bad beat against Hoyt Corkins led to D’Agostino’s pocket 10s losing to quad 7s, leaving John with just one chip before he was eliminated in 6th place.

John has made a very smooth transition to the life of professional poker player at a rather young age, and though he has yet to claim a championship title, he consistently places in prestigious tournaments and makes quite the comfortable living in the cash game arena – live and online. With a great deal of motivation, he is aiming for a high-profile win soon, which will come as no surprise to anyone who has followed his career thus far.