Bárbara Castro (born 8 September 1975) is a Chilean former professional tennis player.

Castro trained at the Santa Rosa de Las Condes in Santiago and was later based in Spain during her career.

She has a younger sister, Valentina, who also represented Chile in Fed Cup tennis.

[1] Castro partnered with Paula Cabezas in the women's doubles event at the 1996 Atlanta Olympics, where they lost their first round match to Hungary's Virág Csurgó and Andrea Temesvári in three sets.

With the same partner, Castro won a silver medal for Chile at the 1999 Pan American Games in Winnipeg.