The Heaven Sword and Dragon Saber, also translated as The Sword and the Knife, is a wuxia novel by Jin Yong and the third part of the Condor Trilogy, preceded by The Legend of the Condor Heroes and The Return of the Condor Heroes. It was first serialised from 6 July 1961 to 2 September 1963 in the Hong Kong newspaper Ming Pao.

Louis Cha Leung-yung, better known by his pen name Jin Yong, was a Chinese wuxia novelist and essayist who co-founded the Hong Kong daily newspaper Ming Pao in 1959 and served as its first editor-in-chief. He was Hong Kong's most famous writer, and is named along with Gu Long and Liang Yusheng as the "Three Legs of the Tripod of Wuxia". He is also known as one of the "Four Great Talents of Hong Kong".