Sword of the Stranger (Japanese: ストレンヂア 無皇刃譚, Hepburn: Sutorenjia Mukōhadan) is a 2007 Japanese animated jidaigeki-chanbara adventure film produced by Bones and released by Shochiku. It depicts Kotaro, a young orphan hunted by Ming swordsmen, who receives unexpected protection from Nanashi, a troubled Rōnin.

The film was commissioned in 2005, directed by Masahiro Andō and written by Fumihiko Takayama. It features the voices of Tomoya Nagase and Yuri Chinen, with animation direction by Megumi Endô, character design by Atsushi Morikawa, and its orchestral score composed by Naoki Satō.

Sword of the Stranger was theatrically released in Japan on September 29, 2007, and began a limited release in the United States on February 5, 2008. It received positive critical reception, with praise for the animation, action sequences, and music. It was nominated for Best Animated Feature Film at the 2008 Asia Pacific Screen Awards and was Japan's submission for Best Animated Feature at the 81st Academy Awards.