"The Adventure of the Mazarin Stone" is one of 12 Sherlock Holmes short stories by Arthur Conan Doyle in The Case-Book of Sherlock Holmes (1927). It was first published in The Strand Magazine in the United Kingdom in October 1921, and was also published in Hearst's International in the United States in November 1921.

The Case-Book of Sherlock Holmes is the final set of twelve Sherlock Holmes short stories by British writer Arthur Conan Doyle first published in the Strand Magazine between October 1921 and April 1927.