Wikipedia:
Cassius was originally an ancient Roman family name; see Cassia (gens).
Cassius may also refer to:
Saints
Cassius of Narni, bishop of NarniCassius of ClermontSaint Cassius, a companion of Saint GereonSaint Cassius, a companion of Saint Carpophorus
Popular culture
Cassius (band), a French electronic music duo"Cassius", a song by the band FoalsHouse Robot Cassius Chrome in the Robot Wars TV seriesCassius Clay, the birthname of the American boxer Muhammad AliChaplain Cassius of the Ultramarines chapter of Space Marines in the fictional Warhammer 40,000 universeCassius, an alias used in the movie "The Double" for a Russian assassin resurfacing after 20 years dormancy to avenge the killers of his family.Cassius, an Italian website that provides translations to many exercises in Latin school books.Cassius, an award winning Australian graphic design agency.