Agathosma crenulata (previously Barosma crenulata) is a flowering plant in the family Rutaceae, native to the lower elevation mountains of southwestern South Africa, where it occurs near streams in fynbos habitats. It is an evergreen shrub growing to 1.5-2.5 m tall. The leaves are opposite, oval, 15-35 mm long and 7-18 mm broad. The flowers are white or pale pink, with five petals; the fruit is a five-parted capsule which splits open to release the seeds.