Cassia may refer to:
Given name Cassia, Kezia or Keziah, a female surname of Biblical origin the female gentilicium name of the Cassia gens in ancient Rome Cassia or Kassia, Byzantine abbess and music scholar Cássia Eller (1962–2001), Brazilian musician Cássia Kiss (born 1958), Brazilian actress Cassià Maria Just (1926–2008), Catalan abbot Cassia O'Reilly (born 1996), Irish singer-songwriter
Fictional characters Cassia, a fictional playable character in Heroes of the Storm Cassia Maria Reyes, the protagonist of the Matched trilogy by Ally Condie
See also Cassia (disambiguation)