Wild Horse Valley AVA
| Wine region | |
| Type | American Viticultural Area |
|---|---|
| Year established | 1988 |
| Years of wine industry | 144 |
| Country | United States |
| Part of | California, North Coast AVA, Napa County, Solano County, Napa Valley AVA |
| Climate region | Region I |
| Heat units | less than 2,500 GDD units |
| Soil conditions | Hambright, Toomes, Gilroy, Coombs, Sobrante and Trimmer loams |
| Total area | 3,300 acres (5.2 sq mi) |
| Size of planted vineyards | 73 acres (30 ha) |
| No. of vineyards | 1 |
| Grapes produced | Chardonnay, Pinot noir |
| No. of wineries | 1 |
Wild Horse Valley is an American Viticultural Area whose borders overlap both Napa and Solano Counties, California and is partially contained within the Napa Valley AVA. It was established on November 30, 1988 by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury after reviewing the petition submitted by John Newmeyer of Napa and four other interested persons proposing the establishment of the viticultural area named "Wild Horse Valley." The appellation's southerly location results in more hours of sunshine than other locations in Napa Valley or nearby Green Valley. The proximity to San Pablo Bay results in a cooler climate, making Wild Horse Valley attractive for the cultivation of grapes like Pinot noir.