Cereus, waxy in Latin, may refer to:
Bacillus cereus, species of bacterium Cereus (cnidarian), a genus of sea anemones in the family Sagartiidae Cereus (plant), a genus of cacti (the family Cactaceae) Ceroid cactus, any of a number of cacti with very elongated bodies, including columnar growth cacti and epiphytic cacti Cereus Poker Network, an online poker network
See also Cerea (disambiguation)