The Diamond Mountain District AVA is an American Viticultural Area in Napa county within the North Coast AVA in the state of California. It is located on the north-western edge of the Napa Valley AVA, on the Napa side of the Mayacaymus mountains. The district is known for long-lived Cabernet-based reds.

Terroir: Altitudes reach 120 metres (400 feet).

Wineries

No certification: Diamond Creek. | Schramsberg. | Sterling. | Von Strasser.