Variant of Anastasia, from Greek 'anastasis' meaning resurrection.
Anastacia is a variant spelling of Anastasia, one of the most historically resonant names in the Christian world. Its roots reach into late Greek: Anastasis means "resurrection," from ana (up, again) and stasis (standing) — a name that carries the theological weight of new life after death. It was popular in the early Christian church precisely because of this meaning, and Saint Anastasia of Sirmium, a martyr of the Diocletianic persecution in the early fourth century, became one of the most venerated saints in both Eastern and Western Christianity.
Her feast day, December 25, was once observed alongside the Christmas liturgy in Rome. The name spread through the Byzantine world and was particularly beloved in Russia, where Anastasia became a fixture of the Romanov dynasty. The most famous bearer in modern memory is Grand Duchess Anastasia Nikolaevna, the youngest daughter of Tsar Nicholas II, whose death in the Bolshevik execution of the imperial family in 1918 gave rise to decades of legend and imposture.
The claim that she had survived — dramatized in numerous films, most famously the 1956 Ingrid Bergman vehicle and the 1997 animated musical — kept the name alive in popular imagination long after the historical mystery was definitively resolved by DNA evidence in 2009. The -cia spelling, Anastacia, adds a slight Latinate or Iberian flavor and has been used in Southern European and Latin American communities, as well as by the South African-born pop singer Anastacia, who achieved considerable international success in the early 2000s. As a given name today it feels both grand and approachable: long enough to carry real gravitas, furnished with natural nicknames (Ana, Stacy, Nastya, Tasha), and backed by one of the most layered etymologies in the naming canon. For parents seeking a name with history, spiritual resonance, and genuine beauty, Anastacia offers all three.