Justin Meyer (born Raymond Meyer, 11 November 1938 – 6 August 2002) was an American vintner, enologist, and monk of the Christian Brothers. He was the founder along with Raymond Twomey Duncan of Silver Oak Cellars in 1972, a successful winery based in the Napa Valley and Alexander Valley. Today Duncan's sons David Duncan and Tim Duncan run Silver Oak Cellars, as well as Twomey Cellars, established in 1999. Meyer sold his share of the company to Duncan in 2001. One of California's top wine experts, he was President of the American Vineyard Foundation in the 1990s and also held numerous other positions in the wine industry. The San Francisco Chronicle cites Meyer as "one of the legends of the Napa Valley".