Keiko Nishi

 is a Japanese manga artist. After graduating from Kagoshima Prefectural Ibusuki High School, she attended Tsuru University from where she graduated with a degree in Japanese literature. While still attending Tsuru University, Nishi made her professional manga debut with her story "Matte Iru yo" in Shogakukan's manga magazine "Petit Flower".
Nishi currently makes a living as an independent manga artist and a teacher. Her definitive works include "Sanban-chō Hagiwara-ya no Bijin" and "Love Song". Matt Thorn described her in the mid-1990s as "one of the most popular and respected artists of her (twenty-something) generation." Her former assistants include Peppe.