- W H Smith Wines (Piedra Hill Vineyard)
- W. H. Smith Wines
- W. Hogue Vineyards
- W.G. Best Weinkellerei
- Wagner Vineyards and Brewing Co.
- Wagoner Vineyards
- Wagonhouse Winery
- Wahluke Wine Company
- Wakefield Country Inn and Vineyards
- Waldensian Heritage Wines
- Waldorf Conceptions
- Wales Manor Winery & Vineyard
- Waliser Winery
- Walker Station Vineyards
- Walla Walla Cellars
- Walla Walla Valley Vineyards
- Walla Walla Village Winery
- Walla Walla Vintners
- Walla Walla Wine Depot
- Walla Walla Wines
- Wallace Winery
- Wallfam
- WallNutt
- Walnut City Wineworks
- Walter Clore Wine and Culinary Center
- Walter Dacon Wines
- Walter Hansel Winery and Vineyards
- Wapato Point Cellars
- Ward Johnson Winery
- Warm Lake Estate Vineyard
- Warner Vineyards
- Warwick Valley Wine Company
- Warwick Valley Winery and Distillery
- Washington Cabinet Company
- Washington Hills
- Washington Vintners
- Washington Vintners
- Washington Wine and Beverage Co.
- Washington Wine Company
- Wasserman Vineyards and Winery (dba Great Bison Wines)
- Wasson Brothers Winery
- Wasson Brothers Winery
- Water 2 Wine
- Waterbrook Winery