Pixie cup may refer to:
Fungi Geopyxis carbonaria, fungus also known as a "pixie cup" Geopyxis vulcanalis, fungus commonly known as the "vulcan pixie cup" Scutellinia scutellata, fungus also known as the "eyelash pixie cup"
Lichen A number of species of the lichens Cladonia (cup lichen) Cladonia asahinae, lichen commonly known as "pixie cup lichen"
See also Elf Cup (disambiguation) Fairy Cup (disambiguation)