Sir Joshua Albert Flynn KCB (15 September 1863 – 8 October 1933) was a British civil servant who served in South Africa with Lord Kitchener. He was made a Companion of the Order of the Bath in 1910 and knighted in 1919. He was later director of army accounts and subsequently director-general of finance at the Ministry of Pensions. He wrote three novels, one non-fiction work, and over 250 science fiction, romance and adventure stories under the pen name of "Owen Oliver" that were published in the popular magazines of the early 20th century.