Abreu Vineyards is a wine producer in the Napa Valley, in northern California. The winery specializes in single-site Cabernet Sauvignon blends from four distinct sites in the St Helena and Howell Mountain sub-appellations. Owner David Abreu has a long history as a vineyard manager for some of Napa's most famous properties, including Harlan Estate and Screaming Eagle. His own wines have reached cult status as well, and several have been awarded 100-point scores by Robert Parker.

The estate was established in 1980 with the planting of the Madrona vineyard in St Helena. The first vintage was in 1986 from this vineyard, and after receiving plenty of accolades, it became a favorite of wine enthusiasts and professionals alike. Over time, Abreu acquired vineyard holdings at three additional properties: Cappella, one of the oldest vineyard sites in St Helena, Howell Mountain vineyard in the AVA of the same name, and finally Thorevilos, which is wedged between St Helena and Howell Mountain, and was planted in 1990.