Actaea may refer to:
Mythology Actaea (mythology), one of two characters from Greek mythology
Biology Actaea (plant), a genus of flowering plants Actaea (crab), a genus of crabs
Astronomy Actaea (moon), the moon of the trans-Neptunian object 120347 Salacia
Other Actaea (pilot boat), a New York pilot boat Actaea, pseudonym of Elizabeth Cabot Agassiz (1822–1907), naturalist
lt:Aktaja pl:Czerniec (roślina)