Wine producers - CaliforniaBeta
- Paso Creek San Luis Obispo County
- Pasterick Wines Sonoma County
- Paul Dolan Vineyards Mendocino County
- Paul Hobbs Winery Napa County
- Paul Lato Wines California
- Pax Mahle Wines Sonoma County
- Peachy Canyon Winery San Luis Obispo County
- Peay Vineyards Sonoma
- Peirano Estate Central Valley
- Peter Franus Wine Company California
- Peter Michael Winery Sonoma County
- Pharaoh Moans Winery San Luis Obispo County
- Philip Togni Wines Napa County
- Piedrasassi California
- Pine Ridge Winery Napa County
- Populis Wines California
- Presqu’ile Winery California
- Pride Mountain Vineyards California
- Prime Wine California
- Promontory Winery Napa