Ninja Kids!!! is a 2011 Japanese family-oriented comedy film directed by Takashi Miike. The film is live-action adaptation of the Japanese anime series Nintama Rantarō. The film stars Seishiro Kato as Rantaro who is sent to a ninja training school by his parents. During the summer, they are challenged by a group of rival ninjas which culminates in a race to ring a bell on top of a mountain.

Takashi Miike is a Japanese film director, film producer and screenwriter. He has directed over one hundred theatrical, video, and television productions since his debut in 1991. His films run through a variety of different genres, and range from violent and bizarre to dramatic and family-friendly movies. He is a controversial figure in the contemporary Japanese cinema industry, with several of his films being criticised for their extreme graphic violence. Some of his best known films are Audition, Ichi the Killer, Visitor Q, the Dead or Alive trilogy and various remakes: Graveyard of Honor, Hara-kiri and 13 Assassins. He has directed over 100 movies and also plays as an actor in 20+ more.