The cable network has teamed up with brewers Ommegang for the blonde ale named Iron Throne as a tie-in with the fantasy series.
Ommegang are based in Cooperstown, New York, and are known for their Belgian-style beers.
Esquire writer Paul Schrodt describes it as "a good TV beer". He said: "The taste is extremely easy-drinking: malty, vaguely fruity, a little spicy, but nothing overpowering. It goes down especially smooth for being 6.5% ABV."
The beer is reportedly available in 750ml bottles in stores, as well as on tap in some pubs in the New York area, including the Three Monkeys bar.
Iron Maiden's Bruce Dickinson recently launched the band's own beer called The Trooper.
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Game of Thrones returns in the US on March 31 on HBO. It follows in the UK one day later on Sky Atlantic.
Game of Thrones season three posters - gallery: