Baccharis malibuensis is a rare California species of shrubs in the aster family known by the common name Malibu baccharis. It is endemic to southern California. It was first recognized as a distinct taxon in the Malibu Creek drainage in the Santa Monica Mountains near Malibu. Other populations have since been located in Ventura, Los Angeles, Orange, and San Diego Counties. It grows in chaparral, coastal sage scrub, and oak woodlands. Most of the occurrences contain fewer than 200 individual plants. The species was described to science only in 1995.