Anastacia (disambiguation)

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