John Atkinson Hobson was an English economist and social scientist. Hobson is best known for his writing on imperialism, which influenced Vladimir Lenin, and his theory of underconsumption.

Joseph Allan Elphinstone Dunn, best known as J. Allan Dunn, was one of the high-producing writers of the American pulp magazines. He published well over a thousand stories, novels, and serials from 1914 to 1941. He first made a name for himself in Adventure. At the request of Adventure editor Arthur Sullivant Hoffman, Dunn wrote Barehanded Castaways, a novel about people trapped on a desert island which was intended to avoid the usual cliches of such stories. Barehanded Castaways was serialised in 1921 and was well received by Adventure's readers. Well over half of his output appeared in Street & Smith pulps, including People's, Complete Story Magazine, and Wild West Weekly. Dunn wrote over a thousand stories. He wrote approximately 470 stories for Wild West Weekly alone. His main genres were adventure and western; although he did write a number of detective stories, most of them appearing in Detective Fiction Weekly and Dime Detective. Dunn wrote The Treasure of Atlantis, a science fiction story about survivals from Atlantis living in the Brazilian jungle. The Treasure of Atlantis was published in All-Around Magazine in 1916 and later reprinted in 1970. He was a specialist in South Sea stories, and pirate stories. He also published a lot of juvenile fiction; including many stories for Boys' Life, primarily in the 1920s. A number of his novel-length stories were reprinted in hardbound, some under the pen name "Joseph Montague" for Street & Smith's Chelsea House imprint; many of his books were issued in the United Kingdom. His stories were frequently syndicated in newspapers, both in America and around the world, making him, for a time, a very widely known author.

John Arthur Hill, best known as J. Arthur Hill, was a British psychical researcher and writer.

John Bagnell Bury was an Anglo-Irish historian, classical scholar, Medieval Roman historian and philologist. He objected to the label "Byzantinist" explicitly in the preface to the 1889 edition of his Later Roman Empire. He was Erasmus Smith's Professor of Modern History at Trinity College Dublin (1893–1902), before being Regius Professor of Modern History at the University of Cambridge from 1902 until his death.

Joseph Barber Lightfoot, known as J. B. Lightfoot, was an English theologian and Bishop of Durham.

John Boynton Priestley was an English novelist, playwright, screenwriter, broadcaster and social commentator.

Joseph William Comyns Carr, often referred to as J. Comyns Carr, was an English drama and art critic, gallery director, author, poet, playwright and theatre manager.

John Davys Beresford was an English writer, now remembered for his early science fiction and some short stories in the horror story and ghost story genres. Beresford was a great admirer of H.G. Wells, and wrote the first critical study of Wells in 1915. His Wellsian novel The Hampdenshire Wonder was a major influence on Olaf Stapledon. His other science-fiction novels include The Riddle of the Tower, about a dystopian, hive-like society.

James Ellis Barker was a British historian, journalist, homeopath and naturopath. Barker was also an alternative cancer treatment advocate who promoted the idea that cancer is caused by autointoxication from chronic poisoning and vitamin starvation.

John Hampden Porter, M.D. was a U.S. Army assistant surgeon during the Civil War. He later became a writer, sociologist, naturalist, and big game hunter. He traveled extensively in Central America at the end of the 19th century and early 20th century, and wrote papers for the Smithsonian Institution and the International Bureau of the American Republics. He wrote popular books and a weekly column for the New York Tribune based on his world travels and adventures as a big game hunter.