13 Assassins is a 2010 samurai film directed by Takashi Miike, and starring Koji Yakusho, Takayuki Yamada, Sōsuke Takaoka, Hiroki Matsukata, Kazuki Namioka and Gorō Inagaki. A remake of Eiichi Kudo's 1963 Japanese period drama film 13 Assassins, it is set in 1844 toward the end of the Edo period in which a group of thirteen assassins—comprising twelve samurai and a hunter—secretly plot to assassinate Lord Matsudaira Naritsugu, the murderous leader of the Akashi clan, to thwart his appointment to the powerful Shogunate Council.

Chanbara (チャンバラ), also commonly spelled "chambara", meaning "sword fighting" films, denotes the Japanese film genre called samurai cinema in English and is roughly equivalent to Western and swashbuckler films. Chanbara is a sub-category of jidaigeki, which equates to period drama. Jidaigeki may refer to a story set in a historical period, though not necessarily dealing with a samurai character or depicting swordplay.