Nanako SOS (ななこSOS, Nanako Esu-ou-esu) is a seinen manga series created by Hideo Azuma which ran in Popcorn and Just Comic (both published by Kobunsha) from April 1980 to July 1986. The series was adapted into 39-episode anime TV series produced by Kokusai Eiga which aired on the Fuji Television network from April 2, 1983 to December 24, 1983.