Darna vs. the Planet Women is a 1975 Filipino superhero film based on the Pilipino Komiks character Darna. Written and directed by Armando Garces, it is the third Darna film to star Vilma Santos in the title role, and the ninth Darna film overall. The film also stars Rosanna Ortiz as the villain Elektra, alongside Zandro Zamora, Bentot Jr., Eva Linda, Lita Vasquez, Lieza Zobel and Diana Villa. The plot concerns Darna's quest to stop the alien Elektra of the planet Arko from leading an invasion of Earth with her female army. Produced by Tagalog Ilang-Ilang Production, Darna vs. the Planet Women was released on December 25, 1975.

Critic Justino Dormiendo of Sagisag panned the film for its patchwork quality comparable to a school play and "laughable" special effects. The Darna series continued with Bira! Darna, Bira! in 1979, with Rio Locsin taking over the lead role, while Santos returned for a final time in 1980's Darna and Ding.