Asti is an unincorporated community in Sonoma County, California, USA. It is located near U.S. Route 101 in the Alexander Valley between Cloverdale and Healdsburg. In 1881, Andrea Sbarboro established two communities, Asti and Chianti, as part of his Italian Swiss Agricultural Colony. Asti was named after the city in northern Italy. A plaque at the southeast corner of Asti Road and Asti Post Office Road commemorates the colony, whose wines won ten gold medals in international competition. The colony is California Historical Landmark #621
Located in the Alexander Valley AVA, Asti is the home of Asti Winery. In the 1950s this winery was the second most visited destination in California, after Disneyland.