Sword Stained with Royal Blood is a wuxia novel by Jin Yong (Louis Cha). It was first serialised in the Hong Kong newspaper Hong Kong Commercial Daily between 1 January 1956 and 31 December 1956. Since its first publication, the novel has undergone two revisions, with the latest edition being the third. Some characters from the novel play minor roles or are simply mentioned by name in The Deer and the Cauldron, another of Jin Yong's novels.