Naishi no suke was a government post in the ritsuryo system (a system of centralized government based on the ritsuryo code) and an undersecretary (a court lady) of Naishi no tsukasa (female palace attendants in kokyu [empress's residence.])
典侍（ないしのすけ）とは、律令制における官職で、内侍司（後宮）の次官（女官）。