Land of Ninja is a supplement published under license by Avalon Hill in 1987 for Chaosium's fantasy role-playing game RuneQuest.

Land of Ninja provides a medieval Japanese setting for RuneQuest called "Nihon".

Land of Ninja, a non-Glorantha product set in Avalon Hill's generic "Fantasy Earth", was written by Bob Charrette and Sandy Petersen, with interior art by Kevin Ramos and Katushika Hokusai, and cover art Steve Purcell.

Bambra also pointed out that scenario maps had not been printed in the U.K. edition, which "makes running these adventures difficult, to say the least."

Woods concluded with a strong recommendation, saying, "A very worthy and honorable addition to any RuneQuest player’s collection.