"The Adventure of the Abbas Ruby" is a Sherlock Holmes mystery by Adrian Conan Doyle, the youngest son of Sir Arthur Conan Doyle, the Sherlock Holmes creator. The story was published in the 1954 collection The Exploits of Sherlock Holmes. It was first published in Collier's on 21 August 1953, and was illustrated by Robert Fawcett in Collier's. It was also printed in two issues of the magazine Summertime in 1965, illustrated by Paul Granger.