Black Mountain Ranch is a suburban community in the northern part of San Diego, California.

The development of Black Mountain Ranch took over 17 years to complete and was led by Fred Maas,[1] a local San Diego businessman with a background in politics and sustainable building practices.

Black Mountain Ranch primarily consists of two separate housing developments known as Santaluz and Del Sur.

Primary access to the community is via Camino Del Sur (from State Highway 56 via Interstate 5 or 15), Carmel Valley Road, San Dieguito Road (from Rancho Santa Fe) and Camino Del Norte (from Interstate 15).

The area is part of San Diego City Council District 5, served by Marni von Wilpert.