Paintbrush lily is a common name for several plants and may refer to:

the genus Haemanthus collectively Haemanthus albiflos, sometimes called "white paintbrush lily", a white-flowered bulbous plant native to southern Africa Haemanthus coccineus, a scarlet-flowered bulbous plant native to southern Africa Scadoxus puniceus, a red-flowered bulbous plant native to southern and eastern Africa

See also Castilleja, the paintbrush flowers of western North America Ageratum houstonianum, Mexican paintbrush