Harold Frederic was an American journalist and novelist. His works include In the Valley (1890), The Damnation of Theron Ware (1896), and The Market Place (1899).

Harold Albert Lamb was an American writer, novelist, historian, and screenwriter. In both his fiction and nonfiction work, Lamb gravitated toward subjects related to Asia and Middle East.

Harold North Fowler was an American classicist. He was married to Mary Blackford Fowler. He was the original translator of a number of Plato's works for the Loeb Classical Library collection.

Harriet Elisabeth Beecher Stowe was an American author and abolitionist. She came from the religious Beecher family and became best known for her novel Uncle Tom's Cabin (1852), which depicts the harsh conditions experienced by enslaved African Americans. The book reached an audience of millions as a novel and play, and became influential in the United States and in Great Britain, energizing anti-slavery forces in the American North, while provoking widespread anger in the South. Stowe wrote 30 books, including novels, three travel memoirs, and collections of articles and letters. She was influential both for her writings as well as for her public stances and debates on social issues of the day.

Harriet E. Wilson was an African-American novelist. She was the first African American to publish a novel on the North American continent.

Harriet Elizabeth Prescott Spofford was an American writer of novels, poems and detective stories. One of the United States's most widely-published authors, her career spanned more than six decades and included many literary genres, such as short stories, poems, novels, literary criticism, biographies, and memoirs. She also wrote articles on household decorative art and travel as well as children's literature.

Harriet Martineau was an English social theorist often seen as the first female sociologist. She wrote from a sociological, holistic, religious and feminine angle, translated works by Auguste Comte, and, rarely for a woman writer at the time, earned enough to support herself. The young Princess Victoria enjoyed her work and invited her to her 1838 coronation. Martineau advised "a focus on all [society's] aspects, including key political, religious, and social institutions". She applied thorough analysis to women's status under men. The novelist Margaret Oliphant called her "a born lecturer and politician... less distinctively affected by her sex than perhaps any other, male or female, of her generation."

Harriet Monroe was an American editor, scholar, literary critic, poet, and patron of the arts. She was the founding publisher and long-time editor of Poetry magazine, which she established in 1912. As a supporter of the poets Wallace Stevens, Ezra Pound, H. D., T. S. Eliot, William Carlos Williams, Carl Sandburg, Max Michelson and others, Monroe played an important role in the development of modern poetry. Her correspondence with early twentieth century poets provides a wealth of information on their thoughts and motives.

Harriett Lothrop was an American author also known by her pseudonym Margaret Sidney. In addition to writing popular children's stories, she ran her husband Daniel Lothrop's publishing company after his death. After they bought The Wayside country house, they worked hard to make it a center of literary life.

Harriette Wilson was the author of The Memoirs of Harriette Wilson: Written by Herself (1825). Wilson was a famed British Regency courtesan who became the mistress of William, Lord Craven, at the age of 15. Later in her career, she went on to have formal relationship arrangements with Arthur Wellesley, 1st Duke of Wellington, and other significant politicians.