Tamara Olga Acosta Zambra (born 5 February 1972) is a prominent Chilean actress.

Tamara Acosta graduated from the Theater School of Fernando González [es].

She is a recognized figure of theater, television, and above all is known as "the muse of Chilean cinema" because she has participated in a large number of films produced in Chile.

Her first television appearance was on Sábado Gigante Internacional in 1991, as a participant in a situation contest.

For her outstanding performance as Ana López [es] on the series Los 80 she was nominated five consecutive times for the Altazor Award for best television actress, winning it three years in a row.