Cudweed is a common name for several species, and may refer to:
Plants in the family Asteraceae Gamochaeta, a plant genus with species in North and South America Gnaphalium, a plant genus with species in Eurasia and the Americas Filago, a plant genus in Eurasia and North America Pseudognaphalium, a plant genus native to North America (e.g. Pseudognaphalium luteoalbum) Euchiton, a plant genus native to Australasia and the Pacific Helichrysum, a plant genus occurring in Africa, Australasia and Eurasia.
Animals Cucullia gnaphalii, a moth in the family Noctuidae