Kyōko Okonogi (小此木 京子: Okonogi Kyōko) is a character in the series Dennō Coil and is the little sister of Yasako. She is young and childish and often gets in the way of danger. She shows a number of fixations; the most common one is the repeated use of the word "poop" when pointing at people and other items of interest (Daichi can even decode her "poop! poop!"-language).

Her seiyu in the Japanese dub is Akiko Yajima.