Napa Nabobs are a term used to describe the wealthy vintners of Napa Valley, California. They are the owners of some of the most successful wineries in the region and have become well-known for their success in the wine industry. The term is derived from the Persian word 'NABOB, ' which means a person of great wealth or power. Napa Nabobs are often credited with helping to make Napa Valley one of the world's premier wine regions.