Haplopappus is a genus of flowering plants in the family Asteraceae found in South America, mostly restricted to the dry regions of the Southern Andes, Chilean Matorral, and Patagonia.

Species: Species accepted by the Plants of the World Online as of December 2022:

Formerly included
Many species once included in Haplopappus are now regarded as belonging to other genera: Acamptopappus, Ageratina, Aztecaster, Benitoa, Croptilon, Ericameria, Grindelia, Gundlachia, Haploesthes, Hazardia, Inulopsis, Isocoma, Leptostelma, Llerasia, Lorandersonia, Machaeranthera, Nestotus, Noticastrum, Oonopsis, Oreochrysum, Oreostemma, Osbertia, Pyrrocoma, Rayjacksonia, Stenotus, Toiyabea, Tonestus, Xanthisma