Miles Gerald Keon (20 February 1821 – 3 June 1875) was an Irish Roman Catholic journalist, novelist, colonial secretary and lecturer.
Both parents dying in his infancy, Keon was left to the care of his maternal grandmother, and later to that of his uncle, Francis Philip, Count Magawly.
For a few months in 1846 he became editor of "Dolman's Magazine", and on 21 November of that year, married Anne de la Pierre, daughter of an English army officer.
In 1852 his first novel, Harding, the Money-Spinner, appeared, serially, in the London Journal, and in 1856, on the occasion of the coronation of Alexander II of Russia, he was again at St. Petersburg representing The Morning Post.
On his return in 1859 from Calcutta in British India, where he had been sent "under a mistaken arrangement" to edit the "Bengal Hurkaru", he was appointed colonial secretary at Bermuda, a position which he held until his death.