Louis M. Martini is an iconic Napa Valley winery that has crafted world-class Cabernet Sauvignon since 1933. Pioneering founder Louis M. Martini played an integral role in establishing Napa Valley as one of the world’s premier winegrowing regions. Today, the winery continues this winemaking tradition with a range of celebrated Cabernet Sauvignon wines from Napa and Sonoma.