A paintbrush is a brush used to apply paint or sometimes ink.
Paintbrush may also refer to:
Plants Castilleja (commonly "Indian paintbrush"), a genus of about 200 species of annual and perennial herbaceous plants Haemanthus albiflos (sometimes "paintbrush"), a species of flowering plant in the family Amaryllidaceae, native to South Africa Haemanthus coccineus (also "paintbrush lily"), a bulbous geophyte in the genus Haemanthus, native to Southern Africa
Software Microsoft Paintbrush, former name of Microsoft Paint, a simple computer graphics app Paintbrush, a raster image editor for macOS PC Paintbrush, graphics editing software