Warren Winiarski (October 22, 1928 – June 7, 2024) was an American Napa Valley winemaker and the founder and proprietor of Stag's Leap Wine Cellars.

[1] Winiarski owned and operated Arcadia Vineyards in the Coombsville AVA of Napa Valley, which produces Chardonnay, Cabernet Sauvignon and Merlot.

[2] He oversaw the Winiarski Family Foundation, which supports educational and charitable causes, in addition to teaching courses at the St. John's College Summer Classics program in Santa Fe, New Mexico.

[9] He also lectured in the Basic Program of Liberal Education at the University of Chicago while working on his Ph.D. After contributing the chapter on Machiavelli in the Rand McNally textbook, History of Political Philosophy (1963),[7] he shortened his academic studies to an MA degree from the John U. Nef Committee on Social Thought.

In 1973 Winiarski built a winery near the vineyard and founded Stag's Leap Wine Cellars, and the next year, 1974, he introduced a reserve line, Cask 23.

Other items chosen for the book from the 137 million artifacts of the museum include Neil Armstrong's space suit, Charles Lindbergh's Spirit of St. Louis, and Lewis & Clark's compass.

[21] On August 1, 2007, Stag's Leap Wine Cellars reached an agreement to be acquired for $185 million by UST Inc. and Marchese Piero Antinori.

In honor of his influence and mentorship to the state's viticultural heritage, he was invited to participate as a Judge at the Colorado Governor's Cup Wine Competition from 2014 to 2018.

[25] Winiarski owned and operated Arcadia Vineyards, in the Coombsville AVA of Napa Valley which produces Chardonnay, Cabernet Sauvignon, and Merlot.

[30][8] In June 2018, Winiarski donated $3.3 million to build the world's most comprehensive collection of wine writers work within the library at the University of California, Davis.