Charles Mills Sheldon was a war correspondent, artist, and book illustrator, born in the United States, who moved to Europe in 1890.

Sheldon was born in Lawrenceburg, Indiana, on 24 June 1866 to George Wilbur Sheldon (11 November 1843 – 3 January 1922) and Jeanette Mills (c. 1847 – 2 February 1929). He was educated at public schools in Lawrenceburg and Des Moines. The 1880 census found him living at home with his parents at age 14, in Des Moines, Iowa. While Hogson states that his father was a publisher, the census return for both 1880 and 1910 gives his father's trade as a Tinner, in a Tin shop.

After initially travelling the Southern United States to illustrated articles for the Associated Press in 1889, Sheldon moved to Paris where he studied at the Académie Julian under Jean-Joseph Benjamin-Constant and Jules Joseph Lefebvre. From Paris he provided illustrations of happenings there for the Pall Mall Budget.

Sheldon died on 14 March at Chiswick Hospital in Chiswick, London