Kage-Onna (影女 Kage-Onna) is a female yōkai.
In the second anime, Kage-Onna appears as a woman with turquoise skin and long navy blue hair that reaches past her waist. Her eyes have white sclerae with usually small, black pupils and her mouth has a white tongue with her inner cheeks being gray. She wears a pink kimono, with white underneath it, that turns into a wispy tail and around her waist is a magenta obi.
In the fourth anime, Kage-Onna appears as a being composed of darkness, resembling a woman with with black skin, long black hair and red, pupil-less eyes. She wears a black kimono and a matching obi, her body and clothes are highlighted with purple.
Kage-Onna appeared in the non-Kitarō story Yōkai Mansion.
Kage-Onna appeared in the Konjaku Hyakki Shūi by Toriyama Sekien. In which, Kage-Onna is described to be a female yōkai, who appears as a woman's shadow cast on shōji by moonlight in a house where mononoke live in Yamagata prefecture.