The Loyal 47 Ronin (忠臣蔵, Chūshingura) is a 1958 color jidaigeki (period drama) Japanese film directed by Kunio Watanabe.

With box office earnings of ¥410 million, it was the most successful film of 1958 in Japan.

[1] Furthermore, it was the second-highest-grossing film of the 1950s in Japan.

[2] The Loyal 47 Ronin tells the true tale of a group of samurai who became rōnin (leaderless samurai) after their daimyō (feudal lord) Asano Naganori was compelled to commit seppuku (ritual suicide) for assaulting a court official, Kira Yoshinaka, who had insulted him.

After carefully planning for over a year, they execute a daring assault on their sworn enemy's estate, and exact their revenge, knowing that they themselves would be forced to share their Lord's fate to atone for their crime.