Cabobanthus polysphaerus is a plant in the family Asteraceae, native to tropical Africa.
Cabobanthus polysphaerus grows as a herb, measuring up to tall. The sessile leaves are oblong and measure up to long. The capitula feature about 5 purple flowers. The fruits are achenes.
Cabobanthus polysphaerus is native to the Democratic Republic of the Congo, Tanzania, Angola and Zambia. Its habitat is in bushland to an altitude of .