Kassia is a female given name of Greek origin, derived from the ancient word kasia, meaning “cassia” or a cinnamon-like spice, and pronounced KAH-see-uh (/kɑːˈsiə/). Its foremost historical bearer is the 9th-century Byzantine abbess and hymnographer Kassia of Constantinople, whose liturgical compositions have secured her place in medieval religious scholarship. In the United States, Kassia has maintained a consistent yet modest presence since the late 1960s: annual occurrences have fluctuated between five and twenty-eight newborns, with twenty recorded in 2024 (ranked 930th) and fifteen in 2023 (943rd). This data, drawn from national registration tables, reveals a stable, niche adoption pattern—resistant to the rapid swings typical of contemporary naming trends—making Kassia an analytically sound choice for parents seeking a name that combines classical roots with understated distinctiveness.