"The Adventure of the Reigate Squire", also known as "The Adventure of the Reigate Squires" and "The Adventure of the Reigate Puzzle", is one of the 56 Sherlock Holmes short stories written by Sir Arthur Conan Doyle. The story was first published in The Strand Magazine in the United Kingdom and Harper's Weekly in the United States in June 1893. It is one of 12 stories in the cycle collected as The Memoirs of Sherlock Holmes.

The Memoirs of Sherlock Holmes is a collection of short stories by British writer Arthur Conan Doyle, first published late in 1893 with 1894 date. It was first published in the UK by G. Newnes Ltd., and was published in the US by Harper & Brothers in February 1894. It was the second collection featuring the consulting detective Sherlock Holmes, following The Adventures of Sherlock Holmes. Like the first it was illustrated by Sidney Paget.