Charles Henry Hart was an American art expert and author.

Charles Hodge was a Reformed Presbyterian theologian and principal of Princeton Theological Seminary between 1851 and 1878.

Charles Homer Haskins was a history professor at Harvard University. He was an American historian of the Middle Ages, and advisor to U.S. President Woodrow Wilson. He is widely recognized as the first academic medieval historian in the United States, and the Haskins Medal was named in his honor.

Charles Hooton was an English novelist and journalist.

Charles Hubbard Judd was an American educational psychologist who played an influential role in the formation of the discipline. Part of the larger scientific movement of this period, Judd pushed for the use of scientific methods to the understanding of education and, thus, wanted to limit the use of theory in the field. Judd who was known for applying scientific methods to the study of educational issues.

Charles James Fox, styled The Honourable from 1762, was a prominent British Whig statesman whose parliamentary career spanned 38 years of the late 18th and early 19th centuries. He was the arch-rival of the Tory politician William Pitt the Younger; his father Henry Fox, 1st Baron Holland, a leading Whig of his day, had similarly been the great rival of Pitt's famous father, William Pitt, 1st Earl of Chatham.

Charles Kendall Adams was an American educator and historian. He served as the second president of Cornell University from 1885 until 1892, and as president of the University of Wisconsin from 1892 until 1901. At Cornell he established a new law school, built a library, and appointed eminent research professors for the Ivy League school. At Wisconsin, he negotiated ever-increasing appropriations from the state legislature, especially for new buildings such as the library. He was the editor-in-chief of Johnson's Universal Cyclopaedia (1892–1895), and of the successor Universal Cyclopaedia (1900), sometimes referred to as Appleton's Universal Cyclopaedia.

Charles Kingsley was a broad church priest of the Church of England, a university professor, social reformer, historian, novelist and poet. He is particularly associated with Christian socialism, the working men's college, and forming labour cooperatives, which failed, but encouraged later working reforms.

Charles Klein was an English-born playwright and actor who emigrated to America in 1883. Among his works was the libretto of John Philip Sousa's operetta, El Capitan. Klein's talented siblings included the composer Manuel and the critic Herman Klein. He drowned during the sinking of the RMS Lusitania.

Charles Knight was an English publisher, editor and author. He published and contributed to works such as The Penny Magazine, The Penny Cyclopaedia, and The English Cyclopaedia, and established the Local Government Chronicle.