Shadow Dancer: The Secret of Shinobi (シャドー・ダンサー ザ・シークレット・オブ・シノビ) is a side-scrolling action game developed and published by Sega for the Sega Genesis in 1990. It was re-released via emulation services such as the Wii's Virtual Console and Microsoft Windows in 2010, and was also included in the North American version of Sega Genesis Collection for the PlayStation 2 and PlayStation Portable.
It is the second game in the Shinobi series released for the Mega Drive, following The Revenge of Shinobi. However, it is not a continuation of the previous game, but rather a loose adaptation to the 1989 arcade game Shadow Dancer. Like in the original arcade game, the player controls a ninja followed by a canine companion. The Secret of Shinobi was well received by critics.