James Justinian Morier was a British diplomat and author noted for his novels about the Qajar dynasty in Iran, most famously for the Hajji Baba series. These were filmed in 1954.

James Kendall Hosmer was an American (Union) soldier during the American Civil War, a pastor, library director, historian, author and a professor of history and literature. Members of the Hosmer family fought in the French and Indian War, American Revolution and the Civil War. As a pastor of the First Church in Deerfield, Massachusetts he left the ministry, feeling duty bound to join the U.S. Army to serve in the Civil War, insisting to serve at the front, where he participated in several major campaigns. As an author and historian he later wrote and published several works about and involving the Civil War and how he viewed the cause of both the North and South. He also authored a number of other works relating to early American history, along with several novels and a fair number of poems. Hosmer also reviewed and published accounts about the Lewis and Clark Expedition at a time when full accounts of the expedition were very few in number and out of print. During his career he corresponded with many prominent writers and historians involving his works. In his latter life he held several prominent positions in various literary associations, including his position as president of the American Library Association.

James Lane Allen was an American novelist and short story writer whose work, including the novel A Kentucky Cardinal, often depicted the culture and dialects of his native Kentucky. His work is characteristic of the late 19th-century local color era, when writers sought to capture the vernacular in their fiction. Allen has been described as "Kentucky's first important novelist".

James Legge was a Scottish linguist, missionary, sinologist, and translator who was best known as an early translator of Classical Chinese texts into English. Legge served as a representative of the London Missionary Society in Malacca and Hong Kong (1840–1873) and was the first Professor of Chinese at Oxford University (1876–1897). In association with Max Müller he prepared the monumental Sacred Books of the East series, published in 50 volumes between 1879 and 1891.

James Mallahan Cain was an American novelist, journalist and screenwriter. He is widely regarded as a progenitor of the hardboiled school of American crime fiction.

James Macpherson was a Scottish writer, poet, literary collector, and politician. He is known for the Ossian cycle of epic poems, which he claimed to have discovered and translated from Gaelic.

James Madison was an American statesman, diplomat, and Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison is hailed as the "Father of the Constitution" for his pivotal role in drafting and promoting the Constitution of the United States and the Bill of Rights.

James Malcolm Rymer (1814–1884) was a British nineteenth-century writer of penny dreadfuls, and is the probable co-author with Thomas Peckett Prest of both Varney the Vampire (1847) and The String of Pearls (1847), in which the notorious villain Sweeney Todd makes his literary debut.

James Mark Baldwin was an American philosopher and psychologist who was educated at Princeton under the supervision of Scottish philosopher James McCosh and who was one of the founders of the Department of Psychology at Princeton and the University of Toronto. He made important contributions to early psychology, psychiatry, and to the theory of evolution.

James Martineau was a British religious philosopher influential in the history of Unitarianism. He was the brother of the atheist social theorist, abolitionist, and atheistic Harriet Martineau. One of James Martineau's children was the Pre-Raphaelite watercolourist Edith Martineau.