The Great Boer War is a non-fiction work on the Boer War by Arthur Conan Doyle and first published in 1900 by Smith, Elder & Co. By the end of the war in 1902 the book had been published in 16 editions, constantly revised by Doyle. The Introduction describes the book as:^[1]

A very thorough account, including tables at the end of those killed or wounded up until the 8th September when he left South Africa. This account is compiled with as much accuracy as was attainable at this date, and with as much detail as a single volume will permit. In frequent conversations with Boers, Conan Doyle has endeavoured to get their views upon both political and military questions. Often the only documents he had to consult were the convalescent officers and men under his care, therefore some errors may have crept in. The closing scenes of the Boer War have necessarily been treated with less detail than the earlier.

The book was completed in September 1900, when the British believed that the war had finished. However, the war continued until 1902.