List of Wineries:
- La Sirena
- Lady of the Sunshine
- Lagier Meredith
- Laird Family Estate
- Lambert Bridge Winery
- Lamborn Family Vineyards Co.
- LaMontagne Winery
- LangeTwins Family Winery and Vineyards
- Larkmead Vineyards
- LaRue Wines
- Lasseter Family Winery
- Laura Michael Wines
- Lawer Estates
- Lazy Creek Vineyards
- Lepiane
- Levendi Winery
- LEVY & McCLELLAND
- Lewelling Vineyards
- Lincourt Vineyards
- Lindstrom Wines
- Lions Peak Vineyards & Winery
- Lisa Bishop Forbes Winemaking
- Lobo Wines
- Long Meadow Ranch Winery
- Loubud Wines
- Lucas & Lewellen Vineyards
- Lumen Wines
- Luna Hart Wines
- Lyeth Estate
- Maboroshi Vineyard
- MacRostie Winery and Vineyards
- Maggy Hawk
- Mahogany Mountain Vineyard & Winery
- Marcassin Vineyard
- Margins Wine
- Marimar Estate Vineyards & Winery
- Marketta Winery
- Markham Vineyards
- Martha Stoumen Wines
- Martin Ranch Winery
- Martin Ray Vineyards & Winery
- Martinelli Winery
- Matanzas Creek Winery
- Materra-Cunat Family Wines
- Matrix Winery
- Mauritson Family Winery
- Medlock Ames Winery
- Merisi
- Merry Edwards Winery
- Meteor Vineyard
- Meyer Family Cellars
- Michael Pozzan Wines
- Migration
- Milano Family Winery
- Millésimé Cellars
- Miner Family Winery
- Mojave Wines
- Monument Mountain Vineyards
- Morét-Brealynn Wines
- Mumm Napa
- Mutt Lynch Winery
- Naked Wines
- Napa Wine Co.
- Neely
- New Clairvaux Vineyard
- Nichelini Winery
- Nicolette Christopher
- Nielson Wines
- Niner Wine Estates
- Noble Oaks Vineyard & Winery
- Notre Vin
- O'Neill Vintners & Distillers
- Oak Farms Vineyards
- Oak Ridge Winery
- Oakville East Wine Co.
- Oakville Ranch
- Oakwild Ranch Toboni Vineyards
- Onesta
- Onward Wines
- Ottavino Wines
- Pacific Star Winery
- Pahlmeyer Winery
- Paint Horse Winery
- Palmaz Vineyards
- Paoletti Estates Winery
- Paradigm Winery
- Passaggio Wines
- Passalacqua Winery
- Peake Ranch Vineyard
- Peay Vineyards
- Pedroncelli Winery
- Peju Province Winery
- Pfendler
- Philip Togni Vineyard
- Pianetta Winery
- Piazza Family Wines
- Pilcrow Wine
- Piña Napa Valley
- Pine Ridge Vineyards
- Plata Wine Partners
- POE Wines
- Portfolio Limited Edition
Name starts with A-F
Name starts with G-K
Name starts with L-P
Name starts with Q-U
Name starts with V-Z
For wineries outside of CA, see Beyond CA