Jinzō Hattori is a character from the 2004 live-action film Nin x Nin: Ninja Hattori-kun, the Movie. He is portrayed as a senior figure within the Iga clan of ninjas, holding the position of a ninja teacher. His background is rooted in the traditions of the Iga school of ninjutsu, a setting that contrasts sharply with the modern world.

In the story, Jinzō Hattori serves as the father of the protagonist, Kanzo Hattori. His primary role is to initiate the central mission of the plot, as he sends his son on a crucial final training exercise. He instructs Kanzo to travel from their home in the Iga region to the city of Edo, which is present-day Tokyo. The terms of this mission are strict: Kanzo must find a master to serve and protect with his life, under the condition that no one other than this master is ever allowed to see him. Should this rule be broken, Kanzo would face banishment from the Iga clan. This directive establishes the core challenge and comedic situations for the rest of the narrative.

Due to the film’s focus on Kanzo's adaptation to life with his young master, Kenichi Mitsuba, and his confrontation with the rival Koga ninja, detailed information about Jinzō Hattori’s personal motivations, personality, development throughout the film, or specific ninja abilities is not available. His key relationship is defined as the father and teacher who sends his son on a pivotal journey, making him a foundational figure whose authority sets the story in motion.