Gregory "Greg" John Noonan (March 4, 1951 – October 11, 2009) was an American brewing expert who authored several published books on brewing. His writing credits include Brewing Lager Beer: The Most Comprehensive Book for Home - And Microbrewers (1986) which he updated in 1996 and changed the title to New Brewing Lager Beer: The Most Comprehensive Book for Home - And Microbrewers. He also wrote Scotch Ale (1993) for the Classic Beer Styles Series from Brewers Publications. He co-authored Seven Barrel Brewery Brewers Handbook (1997) with Mikel Redman and Scott Russell.Noonan was the owner and brewmaster of Vermont Pub and Brewery since 1988.Noonan was a National Judge in the Beer Judge Certification Program.On October 11, 2009 Noonan died after a short battle with stage four lung cancer.