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Look up Anastacia in Wiktionary, the free dictionary.
Anastacia (born 1968 as Anastacia Lyn Newkirk) is an American singer.
Anastacia may also refer to:
- Anastacia (given name), a female given name
- Anastacia (album), 2004 album by Anastacia Lyn Newkirk
- Anastácia, a Mulher sem Destino (TV series; aka Anastácia), a 1967 Brazilian telenovela