Arctus
Arctus may refer to:
- Arctus (crustacean) Dana, 1852, a genus of crustaceans in the family Scyllaridae
- Arctus Haan in Siebold, 1849, a genus of crustaceans in the family Scyllaridae, synonym of Scyllarus
- Arctus, variant name for the centaur Arktos
- Arctus Arctus, one of the Horae