Vinproducenter - CaliforniaBeta
- Lynmar Estate Sonoma County
- MacMurray Estate Vineyards California
- Marcassin Sonoma
- Marimar Estate Sonoma County
- Massican Wines Napa
- Massimo Di Costanzo Napa County
- Matthiasson Napa County
- Mayacamas Vineyards Napa County
- Maybach Family Vineyards Napa County
- McCormack Yolo County
- McManis Family Vineyards California
- Melka California
- Melville Winery Santa Barbara County
- Merryvale Vineyards Napa County
- Michael David Winery Central Valley
- Michael Mondavi Family Napa County
- Morgan Bay Cellars California
- Morgan Winery Monterey County
- Morlet Family Vineyards California
- Mount Eden Vineyards Central Coast