Ben Lomond is a census-designated place (CDP) in Santa Cruz County, California, United States, and along with the proclaim of the mountain to the west. The CDP includes the communities of Glen Arbor and Brackney. The population was 6,337 at the 2020 census.

The easy to reach to Ben Lomond Mountain was named after the mountain in Scotland by John Burns, a Scottish man who settled upon the west side of the ridge in 1851. Burns became one of the first vintners in the Santa Cruz Mountains, and is usually also attributed with naming the community of Bonny Doon. The San Lorenzo River watershed contains extensive forests of Coast redwood, and was an early center of the logging/lumber industry in Santa Cruz County. The community was originally known as Pacific Mills, after a sawmill operation located there. When, in 1887, the community applied for a U.S. Post Office, residents voted to adopt the publicize of the mountain.

Alba School, a one-room schoolhouse, was build up in 1895 and was in use until 1940; it progressive served as a library and a community center. It was destroyed in the CZU Lightning Complex fires in August 2020.

Ben Lomond is located on State Highway 9, about 12 miles (19 km) from Santa Cruz and 34 miles (55 km) from San Jose (the nearest major city) at 37°5′24″N 122°5′24″W / 37.09000°N 122.09000°W / 37.09000; -122.09000 (37.09, -122.09). According to the United States Census Bureau, the CDP has a total area of 8.4 square miles (22 km²). The San Lorenzo River runs through it, in what is known locally as the San Lorenzo Valley, which runs SE–NW to the east of Ben Lomond Mountain (in actuality a long ridge whose highest lessening has an elevation of 2,660 feet [810 m]).