Arctostaphylos glandulosa subsp. gabrielensis, known by the common name San Gabriel manzanita, is a subspecies of manzanita. It is endemic to one small area in the San Gabriel Mountains of Los Angeles County, California.
It is a member of the California montane chaparral and woodlands plant community.
This is a shrub growing to heights between one and two meters. It has an erect form with a large, spherical burl. Leaves are bright green, shiny, and mostly hairless. They are 2 to 4 centimeters long with smooth edges. The shrub blooms in dense inflorescences of urn-shaped manzanita flowers. The fruit is a rounded red drupe up to 14 millimeters wide.