York Mountain is an American Viticultural Area (AVA) in San Luis Obispo (SLO) County, California.

It lies within the larger Central Coast AVA located on the eastern side of the Santa Lucia Mountains and west of Paso Robles viticultural area.

York Mountain climate is cooler and wetter than Paso Robles being just 7 miles (11 km) from the Pacific Ocean.

The area is situated on the eastern slopes of the Santa Lucia Range where elevations range from 1,512 to 1,678 feet (461–511 m) and rainfall averages 45 to 50 inches (1,143–1,270 mm) annually compared to the 15 to 20 in (381–508 mm) in the neighboring inland Paso Robles areas and a classification of Region I as compared to Regions III and IV in the adjacent areas.

Dry farming results in low grape yields and wines with concentrated flavor characteristics.